RHESSI Science Nuggets

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Welcome to the [[RHESSI Science Nuggets]]: science notes from [[RHESSI]].  The following is a time-ordered list of the latest Nuggets added to the wiki.  An [[:Category:Nugget|alphabetical list of wiki Nuggets]] is also available.  If you are looking for older Nuggets than please visit the [http://sprg.ssl.berkeley.edu/~tohban/nuggets/ <b>original series</b> of  RHESSI Science Nuggets] and use the search facilities there; for this new series of Nuggets in the Wiki format, use your browser's search facility for title words or authors.
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Welcome to the [[RHESSI Science Nuggets]]: science notes from [[RHESSI]].  The following is a time-ordered list of the latest Nuggets added to the wiki.  An [[:Category:Nugget|alphabetical list of wiki Nuggets]] is also available as well as [[:Category:RHESSI Nugget List|yearly lists]]. We welcome volunteer authors - please see our page of [[Help:For_Authors| help for authors]]
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We welcome volunteer authors - please see our page of [http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Help:For_Authors help for authors].
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|title = Radio Emissions from Double RHESSI TGFs
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|title = When it rippled in one place and exploded in another
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|number = 295
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|number = 465
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|first_author = Andrey Mezentsev
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|first_author = Ivan ZIMOVETS
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|second_author = and Thomas Gjesteland
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|publish_date = 25 December 2023
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|publish_date = 13 March 2017
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|description = Pulsations precede a flare, but seem unrelated
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|description = Lightning helps with microsecond timing calibrations
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|image=Icon465.png}}
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|image = Icon295.png}}
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|title = Edward Chupp
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|title = Solar flares: evaporation and simulation‎
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|number = 294
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|number = 464
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|first_author = RHESSI
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|first_author = Malcolm DRUETT
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|second_author =
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|publish_date = 18 December 2023
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|publish_date = 6 March 2017
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|description = Fitting beam electrons into multi-dimensional models
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|description =  
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|image=Icon464.png}}
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|image = Icon294.png}}
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|title = Pierre Kaufmann
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|title = Pre-impulsive and Impulsive Phases of the March 28, 2022 Sub-Terahertz Flare
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|number = 293
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|number = 463
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|first_author = RHESSI
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|first_author = Galina G. MOTORINA
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|second_author =
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|publish_date = 11 December 2023
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|publish_date = 19 February 2017
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|description = A flare with an increasing sub-THz spectrum and sub-THZ precursor information
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|description =  
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|image=Icon463.png}}
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|image = Icon293.png}}
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|title = RHESSI's 15th Anniversary
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|title = Coronal Bright Points
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|number = 292
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|number = 462
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|first_author = Brian Dennis, S&auml;m Krucker
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|first_author = Daniel N&Oacute;BREGA-SIVERIO
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|second_author = and Albert Shih
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|publish_date = 27 November 2023
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|publish_date = 13 February 2017
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|description = Bright EUV rowel-like structures can result from null-point reconnection
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|description = RHESSI celebrates 15 years in orbit
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|image=Icon462.png}}
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|image = Icon292.png}}
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|title = Hard X-ray Emission from Partially Occulted Solar Flares
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|title = Aurora-like Radio Emission from a Sunspot
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|number = 291
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|number = 461
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|first_author = Frederic Effenberger
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|first_author = Sijie YU
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|second_author = and Fatima Rubio da Costa
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|publish_date = 20 November 2023
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|publish_date = 30 January 2017
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|description = Maser action above a sunspot
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|description = Systematic use of occultation lets us observe the corona in hard X-rays
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|image=Icon461.png}}
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|image = Icon291.png}}
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|title = GOES Hard X-rays?
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|title = Search for a Flare Anticipation Index (FAI)
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|number = 290
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|number = 460
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|first_author = Hugh Hudson, Janet Machol,
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|first_author = Hugh HUDSON
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|second_author = and Rodney Viereck
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|second_author = and Jim McTiernan
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|publish_date = 16 January 2017
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|publish_date = 13 November 2023
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|description = Solar minimum conditions reveal interesting properties of the GOES X-ray observations
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|description = Quantifying flare precursors on a few-minute time scale
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|image = Icon290.png}}
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|title = Syrovatskii's "constant density" approximation
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|title = Bouncing motions of fast electrons using Nobeyama Radioheliograph
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|number = 289
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|number = 459
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|first_author = Hugh Hudson
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|first_author = Keitarou MATSUMOTO
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|second_author = and Paulo Sim&otilde;es
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|publish_date = 6 November 2023
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|publish_date = 30 December 2016
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|description = Solar evidence for conservation of second adiabatic invariant in particle motion
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|description = Remembering S.I. Syrovatskii; the relevance of the Shmeleva-Syrovatskii “constant density” approximation has been verified by modern high-resolution observations
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|image=Icon459.png}}
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|image = Icon289.png}}
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|title = Statistical Link Between Electrons Emitting X-rays and Type III Radio Bursts
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|title = Impact of nanoflare heating in the lower solar atmosphere
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|number = 288
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|number = 458
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|first_author = Hamish Reid
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|first_author = Helle BAKKE
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|second_author = and Nicole Vilmer
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|publish_date = 30 October 2023
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|publish_date = 19 December 2016
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|description = The behavior of nanoflare fast electrons in Bifrost models
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|description = Correlations across the radio and X-ray spectra imply related populations of source electrons
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|image=Icon458.png}}
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|image = Icon288.jpg}}
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|title = KW-Sun: The Konus/WIND Hard X-ray Solar Flare Database
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|title =   Precise timing of flare footpoint sources from mid-infrared observations‎
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|number = 287
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|number = 457
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|first_author = Alexandra Lysenko
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|first_author = Paulo SIM&Otilde;ES et al.
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|second_author = and the Konus/WIND Team
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|publish_date = 23 October 2023
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|publish_date = 20 November 2016
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|description = Mid-IR observations at high spatial and high temporal resolution: Conjugacy
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|description = A Hale Cycle's worth of hard X-ray and soft gamma-ray flare observations
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|image=Icon457.png}}
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|image = Icon287.png}}
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|title = Microwave Emission from Twisted Magnetic Fields
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|title =   The Greatest GOES Flares‎
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|number = 286
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|number = 456
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|first_author = Mykola Gordovskyy
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|first_author = Hugh HUDSON
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|second_author = and Philippa Browning
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|second_author = and Ed CLIVER
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|publish_date = 13 November 2016
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|publish_date = 25 September 2023
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|description = The inherent magnetic twist of a flaring loop can be inferred from microwave polarization signatures.
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|description = The greatest GOES events, re-analyzed, fall short of expectations
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|image = Icon286.png}}
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|image=Icon456.png}}
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|title = Spatio-Temporal Dynamics of Flare Hard X-ray Pulsations
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|title =   Introducing SunSketcher
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|number = 285
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|number = 455
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|first_author = Ivan Zimovets,
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|first_author = Hugh HUDSON
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|second_author = Sergey Kuznetsov, Alexander Morgachev, and Alexei Struminsky
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|second_author = and Gordon EMSLIE
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|publish_date = 31 October 2016
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|publish_date = 11 September 2023
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|description = In pulsating flare energy release, the hard X-ray source peaks have different locations.
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|description = Galloping towards roundup in the 2024 total solar eclipse
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|image = Icon285.png}}
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|image=Icon455.png}}
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|title = Flare-induced Impulsive Sunspot Rotation caught in High Resolution‎
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|title =   TeV Gamma rays from the Quiescent Sun
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|number = 284
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|number = 454
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|first_author = Chang Liu
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|first_author = Mehr Un NISA
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|second_author = and Haimin Wang
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|second_author = and John BEACOM
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|publish_date = 24 October 2016
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|publish_date = 21 August 2023
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|description = The tail wags the dog - short time scales for coronal stresses on sunspot structure
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|description = Solar photons at unprecedented high energies
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|image = Icon284.png}}
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|image=Icon454.png}}
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|title = Hard X-ray Polarimetry from Tian Gong 2‎
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|title =   Temporal and Spatial Characteristics of Hard X-Ray Sources in Flare Model with Vertical Current Sheet
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|number = 283
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|number = 453
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|first_author = Wojtek Hajdas
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|first_author = Alexander SHABALIN, Eugenia OVCHINNIKOVA,
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|second_author =
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|second_author = and Yuri CHARIKOV
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|publish_date = 20 October 2016
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|publish_date = 7 August 2023
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|description = A novel hard X-ray polarimeter achieves solar "first light"
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|description = Modeling betatron acceleration in current-sheet development.
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|image = Icon283.png}}
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|image=Icon453.png}}
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|title = A flare in the deep solar atmosphere
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|title =   Spatial Distribution of Magnetic Reconnection Rate in an M6.5 Solar Flare
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|number = 282
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|number = 452
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|first_author = Richard Schwartz
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|first_author = Ju JING
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|second_author = and Hugh Hudson
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|publish_date = 12 June 2023
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|publish_date = 26 September 2016
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|description = Linking hard X-rays to high-resolution images that show reconnection rates.
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|description = RHESSI recently spotted a very fast, very compact, and hot flare event in the deep atmosphere
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|image=Icon452.png}}
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|image = Icon_282.png}}
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|title = To be or not to be - the role of projection effects in EUV imaging
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|title =   Statistical study of Type III bursts and associated HXR emissions
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|number = 281
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|number = 451
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|first_author = Karin Dissauer
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|first_author = Nicole VILMER and Tomin JAMES
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|second_author = and Manuela Temmer
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|publish_date = 29 May 2023
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|publish_date = 16 August 2016
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|description = Linking electron populations escaping from the Sun with those that RHESSI detects.
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|description = Perspective matters - application of STEREO views to coronal dimming
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|image=Icon451.png}}
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|image = Icon281.png}}
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|title = Solar flare neutrons observed on the ground and in space
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|title =   Solar flare hard X-rays from the anchor points of an eruptive filament
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|number = 280
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|number = 450
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|first_author = Alexander MacKinnon
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|first_author = Muriel STIEFEL
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|second_author =
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|publish_date = 15 May 2023
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|publish_date = 12 August 2016
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|description = A rare "four-ribbon" flare has been detected in hard X-rays.
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|description = There has been dramatic progress in studying the Sun via its emission of energetic neutrons
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|image=Icon450.png}}
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|image = Icon280.png}}
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|title = Unexpected intensity distributions of solar electrons in the heliosphere
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|title =   Did a Solar Flare Accelerate all the Ambient Electrons in the Coronal Acceleration Region?...
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|number = 279
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|number = 449
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|first_author = Andreas Klassen
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|first_author = Gordon EMSLIE, Eduard KONTAR,
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|second_author = and the SEPT/STEREO team
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|second_author = Galina MOTORINA, and Brian DENNIS
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|publish_date = 13 July 2016
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|publish_date = 1 May 2023
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|description = Solar energetic electrons may have complicated and informative distributions in the interplanetary medium
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|description = Considering SOL2017-09-10, probably not.
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|image = Icon279.png}}
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|image=Icon449.png}}
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|title = Initiation of a type II radio burst without a CME
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|title =   Diagnostics of Spatially-Extended Turbulent Acceleration and Transport
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|number = 278
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|number = 448
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|first_author = Pankaj Kumar,
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|first_author = Morgan STORES
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|second_author = Davina Innes, and Kyung-Suk Cho
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|publish_date = 24 April 2023
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|publish_date = 4 July 2016
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|description = Drilling down into the detailed structure of solar-flare energy release by including turbulence with particle acceleration.
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|description = A global coronal shock wave without a CME driver
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|image=Icon448.png}}
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|image = Icon278.png}}
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|title = Spotlessness returns
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|title =   RHESSI's Re-entry
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|number = 277
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|number = 447
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|first_author = Hugh Hudson
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|first_author = Pascal SAINT-HILAIRE and
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|second_author =  
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|second_author = Hugh HUDSON
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|publish_date = 27 June 2016
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|publish_date = 17 April 2023
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|description = The Sun had no spots for extended periods in June, 2016
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|description = The final demise of RHESSI is this week
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|image = Icon277.png}}
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|image=Icon447.png}}
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|title = RHESSI has resumed operations
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|title =   A Glasgow geomagnetic observation of a solar flare
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|number = 276
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|number = 446
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|first_author = Albert Shih,
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|first_author = Hugh HUDSON, John MALONE-LEIGH,
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|second_author = Brian Dennis and S&auml;m Krucker
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|second_author = Graham WOAN, and Chris OSBORNE
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|publish_date = 20 June 2016
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|publish_date = 13 March 2023
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|description = A successful anneal and RHESSI continues to provide data
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|description = Irish and Scottish geomagnetic observatories see a crochet much like that of the Carrington event
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|image = Icon276.png}}
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|image=Icon_446.png}}
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|title =  Particle Acceleration in Two Coronal Jets
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|number = 445
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|first_author = Yixian ZHANG
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|publish_date =  27 February 2023
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|description = Coronal jets with hard X-ray sources at disjoint locations
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|image=Icon445.png}}
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|title = Non-thermal recombination in solar flares and microflares
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|title =   The Curious First Sunquake of Solar Cycle 25‎
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|number = 275
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|number = 444
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|first_author = Jeffrey Reep
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|first_author = Alexander KOSOVICHEV
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|second_author = and John Brown
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|publish_date = 13 February 2023
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|publish_date = 6 June 2016
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|description = A double whammy: two distinct sunquakes from SOL2022-05-10.
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|description = A heretofore unrecognized emission mechanism for solar hard X-rays
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|image=Icon444.png}}
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|image = Icon275.png}}
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|title = Data-driven radiative hydrodynamic modeling of SOL2014-03-29
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|title =   Hard X-ray Pulsations via Gaussian Decomposition
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|number = 274
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|number = 443
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|first_author = Fatima Rubio da Costa
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|first_author = Hannah COLLIER and Laura HAYES
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|second_author =
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|publish_date = 30 January 2023
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|publish_date = 10 May 2016
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|description = Flare hard X-ray time variations decomposed objectively
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|description = Intense pulses of energy modeled with RADYN
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|image=Icon443.png}}
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|image = Icon274.png}}
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|title =Electron acceleration and hard X-ray emission from SOL2013-11-09
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|title =   A possible coronal magnetic flare precursor
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|number = 273
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|number = 442
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|first_author =Yuri Tsap
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|first_author = Enrico LANDI
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|second_author = and Galina Motorina
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|publish_date = 16 January 2023
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|publish_date = 5 May 2016
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|description = Novel measurements of the coronal magnetic field may help with flare prediction
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|description = Testing the thick-target model in an interesting flare
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|image=Icon442.png}}
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|image = Icon273.png}}
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|title = Extreme events, stellar evolution, and magnetic reconnection
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|title =   A slow HOPE with microwave context
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|number = 272
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|number = 441
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|first_author = Hugh Hudson
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|first_author = Hugh HUDSON
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|second_author =
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|publish_date = 12 December 2022
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|publish_date = 30 April 2016
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|description = A new microwave facility at Chashan Observatory, and a prototypical HOPE
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|description = Stellar activity measured by flare rates over the eons
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|image=Icon441.png}}
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|image = 272f3.jpg}}
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|title = Radio polarization signatures in twisted flare loops
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|title =   Rapid variations of Si IV spectra in a flare observed by IRIS at a sub-second cadence
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|number = 271
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|number = 440
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|first_author = Ivan Sharykin
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|first_author = Juraj L&Ouml;RIN&#268;&Iacute;K
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|second_author = and Alexei Kuznetsov
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|publish_date = 14 November 2022
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|publish_date = 25 April 2016
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|description = Transition-region lines in a flare have a Doppler component revealing quasi-periodic pulsations
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|description = Flux-rope geometry via radio polarization signs
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|image=Icon440.png}}
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|image = Icon271.png}}
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|title = An Unreported White-light Prominence
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|title =   A Significant Sudden Ionospheric Disturbance Associated with a Massive Gamma-ray Burst
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|number = 270
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|number = 439
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|first_author = Matt Penn
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|first_author = Laura HAYES and Peter GALLAGHER
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|second_author = and Hugh Hudson
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|publish_date = 31 October 2022
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|publish_date = 28 March 2016
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|description = A first SID observed in broad daylight, from a source far far away
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|description = Massive flare ejecta observed visually
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|image=Icon439.png}}
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|image = Icon270.png}}
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|title = RHESSI's 5th Anneal
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|title =   Effects of Coronal Structures on the Dynamics of the Global Coronal Wave of SOL2017-09-10‎
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|number = 269
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|number = 438
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|first_author = Albert Shih
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|first_author = Huidong HU, Ying D. LIU, and Bei ZHU
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|second_author = and Brian Dennis
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|publish_date = 17 October 2022
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|publish_date = 23 February 2016
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|description = The amazing global coronal wave of SOL2017-09-10 wrapped around the whole Sun, and displayed transmission and reflection at both polar coronal holes
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|description = RHESSI has begun annealing its detectors, interrupting the flow of data for several weeks
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|image=Icon438.png}}
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|image = Icon269.png}}
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|title = A new development in the Frost-Dennis paradigm
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|title =   KW-Sun: The Konus-Wind Solar Flare Database in Hard X-Ray and Soft Gamma-Ray Ranges
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|number = 268
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|number = 437
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|first_author = Hugh Hudson,
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|first_author = Alexandra LYSENKO
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|second_author = Melissa Pesce-Rollins, and Larisa Kashapova
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|publish_date = 26 September 2022
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|publish_date = 22 February 2016
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|description = An unrivaled hard X-ray and gamma-ray database is entering its third activity maximum
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|description = The Fermi/LAT long-duration events look like SOL1969-03-30
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|image=Icon437.png}}
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|image = Icon268.png}}
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|title = When the Earth’s atmosphere becomes dynamic…
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|title =   First Detection of Kink Oscillations with Solar Orbiter
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|number = 267
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|number = 436
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|first_author = Manuela Temmer,
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|first_author = Sihui ZHONG et al.
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|second_author = Sandro Krauss and Astrid Veronig
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|publish_date = 19 September 2022
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|publish_date = 13 February 2016
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|description = SolO sees coronal oscillations as well as AIA can, and even better
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|description = The Earth's ionosphere reacts strongly to the occurrence of flares and CMEs
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|image=Icon436.png}}
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|image = Icon267.png}}
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|title = Hard X-ray Directivity Measurements with STIX and MiSolFA‎
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|title =   Energetic Neutral Hydrogen from Large Solar Flares
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|number = 266
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|number = 435
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|first_author = Diego Casadei
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|first_author = Glenn MASON
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|second_author = and Hugh Hudson
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|publish_date = 6 September 2022
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|publish_date = 7 December 2015
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|description = A rediscovered data treasury reveals the occurrence of many flare/CME events producing solar high-energy neutral atoms
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|description = Precise stereoscopic observations of hard X-rays can reveal electron beams
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|image=Icon435.png}}
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|image = Icon266.png}}
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|title = On the Correlation of HXR and WL Emission in Solar Flares‎
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|title =   Fifty-year Anniversary of the First Detection of Gamma rays from a Solar Flare
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|number = 265
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|number = 434
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|first_author = Matej Kuhar
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|first_author = Jim Ryan,
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|second_author =  
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|second_author = Brian Dennis, and Phil Dunphy
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|publish_date = 19 November 2015
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|publish_date = 8 August 2022
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|description = New data sharpen the correlations between hard X-rays and white light, but interesting questions remain open
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|description = The rich astrophysics of gamma-ray astronomy began with solar observations fifty years ago
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|image = Icon265.png}}
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|image=Icon434.png}}
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|title = How to better determine the power in non-thermal electrons from observed X-ray spectra
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|title =   Fast Prograde Flows in Solar Active Regions
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|number = 264
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|number = 433
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|first_author = Eduard Kontar,
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|first_author = Hugh HUDSON
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|second_author = Gordon Emslie, Natasha Jeffrey, and Nic Bian
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|publish_date = 25 July 2022
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|publish_date = 9 November 2015
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|description = Unexpected, unpredicted, and not modeled yet - weird flows in hot active-region loops
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|description = Incorporation of energy diffusion for electron transport helps with flare energetics
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|image=Icon433.png}}
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|image = Icon264.png}}
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|title = Soft and Hard X-rays, Flares, and the Corona
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|title =   Undetected Minority-polarity Flux, Moss, and Coronal Heating
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|number = 263
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|number = 432
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|first_author = Hugh Hudson
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|first_author = Yi-Ming WANG
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|second_author =
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|publish_date = 11 July 2022
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|publish_date = 20 October 2015
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|description = There's plenty of room in "unipolar" active regions for both polarities, and there is good evidence for them
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|description = Behavior of the X-ray Sun at low activity levels
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|image=Icon432.png}}
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|image = Icon263.png}}
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|title = Fine Structure in Flare Soft X-ray Light Curves
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|title =   Thermal/Nonthermal with MinXSS and RHESSI
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|number = 262
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|number = 431
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|first_author = Brian Dennis
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|first_author = Shunsaku NAGASAWA
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|second_author = and Kim Tolbert
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|publish_date = 13 June 2022
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|publish_date = 21 September 2015
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|description = Time-domain studies of improved X-ray spectra reveal a "super-hot' component
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|description = A tool that we've had since 1976 now gives us surprisingly precise new information
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|image=Icon431.png}}
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|image = Icon262.png}}
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|title = Photospheric Electric Fields and Energy Fluxes in the Eruptive Active Region NOAA 11158
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|title =   Sun-as-a-star spectroscopic observations of the line-of-sight velocity of a solar eruption on October 28, 2021
-
|number = 261
+
|number = 430
-
|first_author = Maria Kazachenko
+
|first_author = Yu XU
-
|second_author =  
+
|second_author = and Hui TIAN
-
|publish_date = 14 September 2015
+
|publish_date = 30 May 2022
-
|description = Flares need magnetic energy. We can now measure its arrival as Poynting flux across the solar photosphere.
+
|description = The observation of the full 3d velocity of a CME, for an anniversary event
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|image = Icon261.png}}
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|image=Icon430.png}}
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|title = RHESSI and General Relativity
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|title =   Carl Størmer
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|number = 260
+
|number = 429
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|first_author = Bill Thompson
+
|first_author = Hugh HUDSON
-
|second_author = and Hugh Hudson
+
|second_author = and Lyndsay FLETCHER
-
|publish_date = 7 September 2015
+
|publish_date = 15 April 2022
-
|description = General-relativistic corrections to RHESSI source positions
+
|description = Størmer and the theory of trapping in loops
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|image = Icon260.png}}
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|image=Icon429.png}}
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|title = Return-current Model Spectra and Enhanced Plasma Resistivity
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|title =   Solar Hard X-rays with Insight
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|number = 259
+
|number = 428
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|first_author = Meriem Alaoui
+
|first_author = Wei WANG
-
|second_author = and Gordon Holman
+
|second_author = and Ping ZHANG
-
|publish_date = 31 August 2015
+
|publish_date = 21 March 2022
-
|description = A basic return-current model matches RHESSI hard X-ray spectra and implies a need for anomalous resistivity
+
|description = A spectacular limb flare introduces Insight/HXMT, a new observational resource
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|image = Icon259.png}}
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|image=Icon428.png}}
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|title = High Energies in the Inner Heliosphere
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|title =   Probing chromospheric current sheets using SST and ALMA co-observations
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|number = 258
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|number = 427
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|first_author = Hugh Hudson
+
|first_author = Jo&atilde;o da SILVA SANTOS
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|second_author =
+
|publish_date = 21 February 2022
-
|publish_date = 24 August 2015
+
|description = Emerging magnetic flux appears in ALMA images reflecting coronal current sheets
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|description = Cosmic rays measure the coronal magnetic field at the PFSS source surface itself
+
|image=Icon427.png}}
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|image = Icon258.png}}
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|title = A Two-ribbon White-light Flare Associated with a Failed Solar Eruption
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|title =   A demonstration of STIX hard X-ray imaging spectroscopy capabilities for an X-class flare (SOL2021-10-28)
-
|number = 257
+
|number = 426
-
|first_author = Xin CHENG
+
|first_author = Andrea BATTAGLIA, Hannah COLLIER,
-
|second_author =  
+
|second_author = and S&auml;m KRUCKER
-
|publish_date = 13 July 2015
+
|publish_date = 7 February 2022
-
|description = The ONSET facility in Yunnan observes an interesting flare event
+
|description = STIX imaging of an X-class flare marks its success
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|image = Icon257.png}}
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|image=Icon426.png}}
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|title = The Fastest Flare
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|title =   A solar flare driven by thermal conduction observed in mid-infrared
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|number = 256
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|number = 425
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|first_author = Hugh Hudson
+
|first_author = Guillermo GIM&Eacute;NEZ de CASTRO
-
|second_author = and Paulo Sim&otilde;es
+
|publish_date = 24 January 2022
-
|publish_date = 29 June 2015
+
|description = Strong 10-micron emission from a GOES C2 flare suggests conductive heating
-
|description = A GOES soft X-ray burst lasting less than one minute - with hard X-rays and white-light continuum
+
|image=Icon425.png}}
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|image = Icon256.png}}
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|title = High-energy Electrons and Electric Currents during a Flare
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|title =   Disk Occultation of a Lopsided Sun‎
-
|number = 255
+
|number = 424
-
|first_author = Sophie Musset,
+
|first_author = Hugh HUDSON,
-
|second_author = Nicole Vilmer and V&eacute;ronique Bommier
+
|second_author = Stephen WHITE and S&auml;m KRUCKER
-
|publish_date = 22 June 2015
+
|publish_date = 10 January 2022
-
|description = Photospheric vertical currents linked to sites of electron acceleration in the corona
+
|description = Observing a spotless Sun can enable observations of the faint corona.
-
|image = Icon255.png}}
+
|image=Icon424.png}}
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|title = High Dispersion Spectroscopy of solar-type superflare stars
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|title =   Resolving two distinct thermal X-ray components in a compound solar flare
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|number = 254
+
|number = 423
-
|first_author = Yuta Notsu
+
|first_author = Zhenjun ZHOU
-
|second_author =  
+
|second_author = and Rui LIU
-
|publish_date = 8 June 2015
+
|publish_date = 28 December 2021
-
|description = Researching the properties of Kepler's solar-type superflare stars
+
|description = Superhot coronal sources may be independent loop systems
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|image = Icon254.png}}
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|image=Icon423.png}}
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|title = "Superflares" on solar-type stars observed with Kepler
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|title =   Bridging solar flares to coronal mass ejections
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|number = 253
+
|number = 422
-
|first_author = Hiroyuki Maehara
+
|first_author = Markus ASCHWANDEN
-
|second_author =
+
|publish_date = 14 December 2021
-
|publish_date = 1 June 2015
+
|description = The Neupert effect allows us to trace coronal mass ejections seamlessly
-
|description = Flare energies 10-1000 times those of the most powerful solar flares
+
|image=Icon422.png}}
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|image = Icon253.png}}
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|title = EOVSA Coverage of a Recent Gamma-Ray Flare
+
|title =   The Jakimiec Diagnostic Diagram
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|number = 252
+
|number = 421
-
|first_author = Dale Gary
+
|first_author = Hugh HUDSON
-
|second_author = and Gregory Fleishman
+
|publish_date = 29 November 2021
-
|publish_date = 11 May 2015
+
|description = The joint variation of GOES temperature and emission measure discloses new features via an old tool
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|description = A recent gamma-ray flare observed with Owens Valley microwave imaging spectroscopy
+
|image=Icon421.png}}
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|image = Icon252.png}}
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|title = Ionospheric Effects, Flare History, and Dick Donnelly
+
|title =   First look at ALMA/HInode/IRIS microflares
-
|number = 251
+
|number = 420
-
|first_author = Hugh Hudson
+
|first_author = Toshifumi SHIMIZU
-
|second_author = and Peter Gallagher
+
|second_author = et al.
-
|publish_date = 27 April 2015
+
|publish_date = 8 November 2021
-
|description = Recognizing the world’s largest X-ray detector, its ionosphere
+
|description = High-resolution ALMA and multiwavelength observations of microflaring
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|image = 251f3.png}}
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|image=Icon420.png}}
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|title = RHESSI Detection of X-ray Emission from a Quiet-Sun Filament Eruption
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|title =   Thomson scattering near sunspots
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|number = 250
+
|number = 419
-
|first_author =Gordon Holman
+
|first_author = Pascal Saint-Hilaire
-
|second_author = and Adi Foord
+
|second_author = et al.
-
|publish_date = 13 April 2015
+
|publish_date = 25 October 2021
-
|description = A RHESSI X-ray flare is detected outside an active region
+
|description = Completing the modeling of low-coronal Thomson polarimetry
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|image = Icon250.png}}
+
|image=Icon419.png}}
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|title = Soft X-ray emission in kink-unstable coronal loops‎
+
|title =   A Non-PFSS Global Coronal Model
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|number = 249
+
|number = 418
-
|first_author = Rui Pinto,
+
|first_author = Oliver RICE
-
|second_author = Nicole Vilmer, and Sacha Brun
+
|second_author = and Anthony YEATES
-
|publish_date = 30 March 2015
+
|publish_date = 11 October 2021
-
|description = Kinking flux ropes can create flare emission, but their detection may be deceptive
+
|description = Modeling as convenient as PFSS but much more realistic
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|image = Icon249.png}}
+
|image=Icon418.png}}
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|title = Daily solar mm-observations at Aalto University Metsähovi Radio Observatory
+
|title =   Manifold Nonthermality
-
|number = 248
+
|number = 417
-
|first_author = Juha Kallunki
+
|first_author = Marina BATTAGLIA
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|second_author = and Minttu Uunila
+
|second_author = et al.
-
|publish_date = 16 March 2015
+
|publish_date = 27 September 2021
-
|description = Systematic microwave and mm-wave solar observations from Finland
+
|description = Even weak flares involve multiple sites of non thermal activity
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|image = Icon248.png}}
+
|image=Icon417.png}}
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|title = Solar Physics during the March 2015 Solar Eclipse‎
+
|title =   X-Rays from a Type I Radio Burst
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|number = 247
+
|number = 416
-
|first_author = Hamish Reid
+
|first_author = R.  RAMESH
-
|second_author = and Hugh Hudson
+
|publish_date = 20 September 2021
-
|publish_date = 9 March 2015
+
|description = A first identification of type I radio emission with hot plasma
-
|description = A total solar eclipse is coming on 2015 March 20, a good opportunity for many observatories
+
|image=Icon416.png}}
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|image = Icon247.png}}
+
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|title = Glasgow Callisto and CMEless type II bursts
+
|title =   Do Hot Onsets Predict Flare Magnitudes?
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|number = 246
+
|number = 415
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|first_author = Peter Wakeford
+
|first_author = Hugh HUDSON
-
|second_author = and Hugh Hudson
+
|publish_date = 30 August 2021
-
|publish_date = 16 February 2015
+
|description = Maybe we can tell how big a flare is going to be from its initial development...
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|description = The Glasgow Callisto telescope observes rare type II bursts without CME drivers
+
|image=Icon415.png}}
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|image = Icon246.png}}
+
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|title = Flare Heating by Mildly Non-thermal Particles
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|title =   Confined or Eruptive?
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|number = 245
+
|number = 414
-
|first_author = Jeffrey Reep
+
|first_author = Ting LI et al.
-
|second_author =
+
|publish_date = 16 August 2021
-
|publish_date = 26 January 2015
+
|description = Increased magnetic flux reduces CME eruptivity
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|description = Sorting out nonthermal distributions via HYDRAD models
+
|image=Icon414.png}}
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|image = Icon245.png}}
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|title = Above-the-Looptop Sources
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|title =   Impulsive and Gradual Eruptive Gamma Flares and Associated CMEs
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|number = 244
+
|number = 413
-
|first_author = Mitsuo Oka
+
|first_author = Alexey STRUMINSKY,
-
|second_author = and Säm Krucker
+
|second_author = Irina GRIGORIEVA and Andrei SADOVSKI
-
|publish_date = 12 January 2015
+
|publish_date = 19 July 2021
-
|description = Electron distribution functions in coronal sources
+
|description = Extreme behavior of flare/CME events explained by environment
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|image = Icon244.png}}
+
|image=Icon373.png}}
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|title = The IAU Solar Target Identifier - A Good Thing
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|title =   The Morphology of Flare Time Profiles
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|number = 243
+
|number = 412
-
|first_author = Hugh Hudson
+
|first_author = Larisa KASHAPOVA
-
|second_author = and John Leibacher
+
|second_author = et al.
-
|publish_date = 29 December 2014
+
|publish_date = 12 July 2021
-
|description = Standardized names for flares help a lot
+
|description = Systematic comparison of solar and stellar flaring time profiles
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|image = Icon243.png}}
+
|image=Icon412.png}}
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|title = The Low-High-Low Starting Frequency Trend in Groups of Type III Bursts
+
|title =   Flare Pulsation and the Heliosphere
-
|number = 242
+
|number = 411
-
|first_author = Hamish Reid
+
|first_author = Brendan CLARKE
 +
|second_author = et al.
 +
|publish_date =  5 July 2021
 +
|description =  Flare pulsations link closely to the distant heliosphere
 +
|image=Icon411.png}}
 +
 
 +
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|title =  STIX, the Hard X-Ray Telescope on board Solar Orbiter
 +
|number = 410
 +
|first_author = Andrea Francesco BATTAGLIA
 +
|second_author = and S&auml;m KRUCKER
 +
|publish_date =  28 June 2021
 +
|description =  STIX is operational and producing great data
 +
|image=Icon410.png}}
 +
 
 +
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|title =  Nonequilibrium Ionization of Flare Plasma Observed by Hinode/EIS
 +
|number = 409
 +
|first_author = Shinsuke IMADA
|second_author =  
|second_author =  
-
|publish_date = 23 December 2014
+
|publish_date = 14 June 2021
-
|description = The type III radio bursts echo the pattern of flare energy release
+
|description = Evidence for non-equilibrium ionization in the current sheet of SOL2017-09-10
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|image = Icon242.png}}
+
|image=Icon409.png}}
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|title = The Solar X-ray Limb II
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|title =   Effects of Flares on Solar p-modes
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|number = 241
+
|number = 408
-
|first_author = Marina Battaglia
+
|first_author = Maria-Cristina RABELLO SOARES
-
|second_author = and Hugh Hudson
+
|second_author = and Frederic BAUDIN
-
|publish_date = 24 November 2014
+
|publish_date = 26 April 2021
-
|description = X-raying the mass distribution at the limb of the Sun: the true solar radius
+
|description = No detectable p-mode amplitude changes due to solar flares
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|image = Icon241.png}}
+
|image=Icon408.png}}
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|title = Back from the Far Side
+
|title =   Subsecond Spikes in Solar Flare X-ray Flux as Seen by Fermi GBM
-
|number = 240
+
|number = 407
-
|first_author = Hugh Hudson
+
|first_author =Trevor KNUTH
-
|second_author = and Greg Slater
+
|second_author = and Lindsay GLESENER
-
|publish_date = 17 November 2014
+
|publish_date = 19 April 2021
-
|description = Active region 2192 has returned as 2209, still no CMEs
+
|description = A new analysis technique pushes hard X-ray time scales to 0.1 sec or faster
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|image = Icon240.png}}
+
|image=Icon407.png}}
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|title = A Record-Setting CMEless Flare
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|title = Negative He 10830 Flare Ribbons and Non-thermal Electrons
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|number = 239
+
|number = 406
-
|first_author = Sam Freeland
+
|first_author = Graham KERR
-
|second_author = and Greg Slater
+
|second_author =  
-
|publish_date = 27 October 2014
+
|publish_date = 12 April 2021
-
|description = Active region 2192 produced many huge flares, but no CMEs
+
|description = A 1D radiation hydrodynamics model can explain the dark leading edges of He I flare ribbons
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|image = Icon239.png}}
+
|image=Icon406.png}}
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|title = The Formation of Kappa Distributions in Solar Flares
+
|title = Tracing the sources of gradual solar energetic particle events
-
|number = 238
+
|number = 405
-
|first_author = Nicolas Bian
+
|first_author = David H. BROOKS
-
|second_author = and Duncan Stackhouse
+
|second_author = and Stephanie L. YARDLEY
-
|publish_date = 13 October 2014
+
|publish_date = 29 March 2021
-
|description = Kappa distributions may form naturally in certain flare environments
+
|description = Chemical abundances in SEPs suggest an origin in flare-related moss regions
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|image = Icon238.png}}
+
|image=Icon405.png}}
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|title = The Balmer continuum observed from IRIS!
+
|title = The Superflare SOL2017-09-06: from submm to mid-IR
-
|number = 237
+
|number = 404
-
|first_author = Petr Heinzel
+
|first_author = Guillermo (Guigue) GIM&Eacute;NEZ DE CASTRO
-
|second_author = and Lucia Kleint
+
|second_author =  
-
|publish_date = 29 September 2014
+
|publish_date = 15 March 2021
-
|description = For the first time we have clear and direct observations of the Balmer continuum, from space
+
|description = Glimpsing the "missing decades" of the flare emission spectrum
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|image = Icon237.png}}
+
|image=Icon404.png}}
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|title = Energy goes up... but doesn't come back down! Coronal heating?
+
|title = The Neupert Effect Revisited
-
|number = 236
+
|number = 403
-
|first_author = Brian Welsch
+
|first_author = Jiong QIU
|second_author =  
|second_author =  
-
|publish_date = 22 September 2014
+
|publish_date = 8 March 2021
-
|description = The Poynting flux responsible for coronal heating may have been spotted
+
|description = Two time scales for heating individual flare strands
-
|image = Icon236.png}}
+
|image=Icon403.png}}
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|title = Which detectors can I use to analyze this flare?
+
|title = FLUKA as a tool for interpreting flare gamma-rays
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|number = 235
+
|number = 402
-
|first_author = Brian Dennis
+
|first_author = Alec MACKINNON
-
|second_author = and Kim Tolbert
+
|second_author =  
-
|publish_date = 15 September 2014
+
|publish_date = 1 March 2021
-
|description = A new Browser feature helps to answer this question
+
|description = The nuclear physics of solar flares captured in a detailed model
-
|image = Icon235.png}}
+
|image=Icon402.png}}
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|title = RHESSI Resumes Observations
+
|title = A Collective Study of 11 NuSTAR Microflares
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|number = 234
+
|number = 401
-
|first_author = Albert Shih
+
|first_author = Jessie DUNCAN and
-
|second_author =  and S&auml;m Krucker
+
|second_author = Lindsay GLESENER
-
|publish_date = 1 September 2014
+
|publish_date 22 February 2021
-
|description = Back to normal, the anneal was a success
+
|description =  Swarms of NuSTAR micro flares
-
|image = Icon234.png}}
+
|image=Icon401.png}}
 +
 
 +
{{{{Nugget Badge
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|title =  A Solar FRB
 +
|number = 400
 +
|first_author = Dale GARY and
 +
|second_author = Hugh HUDSON
 +
|publish_date = 15 February 2021
 +
|description = A new frontier in the solar time domain
 +
|image=Icon400.png}}
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|title = EUNIS Sees Pervasive Faint Fe XIX Emission: Evidence for Nanoflare Heating
+
|title = Richard Schwartz
-
|number = 233
+
|number = 399
-
|first_author = Jeff Brosius
+
|first_author = Brian DENNIS and
-
|second_author =  
+
|second_author = Hugh HUDSON
-
|publish_date = 18 August 2014
+
|publish_date = 25 January 2021
-
|description = Faint emission at flare-like temperatures in a large coronal area
+
|description = Remembering a friend and colleague
-
|image = Icon233.png}}
+
|image=Icon399.jpg}}
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|title = Octupolar out-of-plane magnetic field structure generation during magnetic reconnection
+
|title = Observing Solar Flare X-ray Polarization with Prospective CubeSat Missions
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|number = 232
+
|number = 398
-
|first_author = Jan Graf von der Pahlen
+
|first_author = Natasha JEFFREY
-
|second_author = and David Tsiklauri
+
|publish_date = 4 January 2021
-
|publish_date = 11 August 2014
+
|description = The polarization of the solar X-ray spectrum generally remains to be observed
-
|description = A new characteristic marker of reconnection
+
|image=Icon398.png}}
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|image = Icon232.png}}
+
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|title = Flare Observed by a Dozen Instruments
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|title = Solar effects in the local interstellar medium
-
|number = 231
+
|number = 397
-
|first_author = Lucia Kleint
+
|first_author = Don GURNETT and
-
|second_author = and Kevin Reardon
+
|second_author = Hugh HUDSON
-
|publish_date = 28 July 2014
+
|publish_date = 14 December 2020
-
|description = A wonderful flare observed by a grand set of instruments, including IRIS and IBIS
+
|description = Relativistic particle events observed _in situ_ in the interstellar medium
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|image = Icon231.png}}
+
|image=Icon397.png}}
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|title = The Redistribution of Nonthermal Electron Energy
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|title = Investigation of Small-Scale Energy Releases in Hard X-rays with ​FOXSI
-
|number = 230
+
|number = 396
-
|first_author = Ryan Milligan
+
|first_author = Subramania ATHIRAY and
-
|second_author =  
+
|second_author = Juliana VIEVERING
-
|publish_date = 14 July 2014
+
|publish_date = 7 December 2020
-
|description = Describing what we know about the dominant energy driving a solar flare
+
|description = Hard X-rays and high temperatures from the feeblest microflares
-
|image = Icon230.png}}
+
|image=Icon396.png}}
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|title = RHESSI is Annealing Now
+
|title = What drives impulsive coronal heating?
-
|number = 229
+
|number = 395
-
|first_author = Albert Shih
+
|first_author = Pradeep CHITTA
-
|second_author = and Martin Fivian
+
|second_author = et al.
-
|publish_date = 7 July2014
+
|publish_date = 30 November 2020
-
|description = A fourth repair job for RHESSI, smoothing out radiation damage
+
|description = Impulsive footpoint emissions suggest magnetic reconnection in the chromosphere
-
|image = Icon229.png}}
+
|image=Icon395.png}}
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|title = Mysteries of Flare/CME Initiation
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|title = Probing the solar coronal heating function with slow magnetoacoustic waves
-
|number = 228
+
|number = 394
-
|first_author = Shaun Bloomfield
+
|first_author = Dmitrii KOLOTKOV
-
|second_author = and Hugh Hudson
+
|second_author = et al.
-
|publish_date = 8 June 2014
+
|publish_date = 16 November 2020
-
|description = Pairs of flares
+
|description = Coronal heating models meet damped slow magnetoacoustic waves
-
|image = Icon228.png}}
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|image=Icon394.png}}
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|title = Solar Cosmic Rays, Neutrons, and Fermi Gamma-Rays
+
|title = Self-Consistent Flare Model
-
|number = 227
+
|number = 393
-
|first_author = Hugh Hudson
+
|first_author = Wenzhi RUAN
-
|second_author = and Alec MacKinnon
+
|second_author = and Rony KEPPENS
-
|publish_date = 24 May 2014
+
|publish_date =  2 November 2020
-
|description = Exciting new solar high-energy observations
+
|description =  Energy transport by fast particles made self-consistent with MHD flare modeling
-
|image = Icon227.png}}
+
|image=Icon393.png}}
 +
 
 +
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|title =  Hot Flare Onsets
 +
|number = 392
 +
|first_author = Hugh HUDSON
 +
|second_author = et al.
 +
|publish_date = 26 October 2020
 +
|description = The initial soft X-ray temperatures of solar flares tend to be in the 10-15 MK range
 +
|image=Icon392.png}}
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|title = The 3D standard model for eruptive flares‎
+
|title = Electric Current Neutralization and Eruption
-
|number = 226
+
|number = 391
-
|first_author = Miho Janvier
+
|first_author = Ellis AVALLONE
 +
|second_author = and Xudong SUN
 +
|publish_date =  19 October 2020
 +
|description =  Coronal currents without neutralizing return currents appear to
 +
|image=Icon391.png}}
 +
 
 +
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|title =  Prediction of Solar Cycle 25
 +
|number = 390
 +
|first_author = Leif SVALGAARD
|second_author =  
|second_author =  
-
|publish_date = 10 May 2014
+
|publish_date = 5 October 2020
-
|description = Torus instability and slipping reconnection
+
|description = Now we know how big the next solar maximum will be
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|image = Icon226.png}}
+
|image=Icon390.png}}
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|title = Microwave Images of a Single-Loop Flare: Observations and Simulations
+
|title =   Flare/CME Cartoon Archive
-
|number = 225
+
|number = 389
-
|first_author = Alexey Kuznetsov
+
|first_author = Hugh HUDSON
-
|second_author = and Eduard Kontar
+
|second_author =  
-
|publish_date = 28 April 2014
+
|publish_date = 27 September 2020
-
|description = A flare analysis making use of the new GX Simulator modeling software
+
|description = A new edition of the Flare/CME archive, nearly a half kilotoon now
-
|image = Icon225.png}}
+
|image=Icon389.png}}
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|title =Abundances in Solar Flares
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|title =   Submerged Flare Acoustic Sources
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|number = 224
+
|number = 388
-
|first_author = Harry Warren
+
|first_author = Juan Camilo BUITRAGO CASAS
 +
|second_author = and Angel MART&Iacute;NEZ
 +
|publish_date =  13 September 2020
 +
|description =  Flare acoustic radiation emanates from a source _inside_ the Sun
 +
|image=Icon388.png}}
 +
 
 +
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|title =  Circular Ribbon Flare at Microwaves
 +
|number = 387
 +
|first_author = Jeongwoo LEE
|second_author =  
|second_author =  
-
|publish_date = 21 April 2014
+
|publish_date = 31 August 2020
-
|description = Wrinkles in the FIP effect for flares
+
|description = Breakout reconnection reveals itself via microwave polarization measurements.
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|image = Icon224.png}}
+
|image=Icon387.png}}
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|title =Homing in on Flare Energy
+
|title =   Relation of Non-neutralized electric currents and the activity in active regions
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|number = 223
+
|number = 386
-
|first_author = Hugh Hudson
+
|first_author = P. VEMAREDDY
-
|second_author = and Ryan Milligan
+
|second_author =  
-
|publish_date = 14 April 2014
+
|publish_date = 24 August 2020
-
|description = Representing the spectral energy distribution of a flare
+
|description = Non-neutralized coronal current systems contribute to CME eruptions
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|image = Icon223.png}}
+
|image=Icon386.png}}
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|title =Empirical Constructs and Cartoons
+
|title =   White-light emission and photospheric magnetic field changes in flares
-
|number = 222
+
|number = 385
-
|first_author = Forrest Mozer
+
|first_author = J. Sebasti&aacute;n CASTELLANOS DUR&Aacute;N
-
|second_author = and Hugh Hudson
+
|second_author = and Lucia KLEINT
-
|publish_date = 24 March 2014
+
|publish_date = 17 August 2020
-
|description = How our mental images may relate to what's really going on
+
|description = There are strong correlations between white-light flare emissions and line-of-sight magnetic field changes
-
|image = Icon222.png}}
+
|image=Icon385.png}}
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|title = Imaging Quasi-Periodic Oscillations in a Simple Flare‎
+
|title =   Sunspot Differential Rotation in an X-class Flare
-
|number = 221
+
|number = 384
-
|first_author = Zongjun Ning
+
|first_author = Richard GRIMES,
-
|second_author = and Hugh Hudson
+
|second_author = Bal&aacute;zs PINT&Eacute;R and Huw MORGAN
-
|publish_date = 17 March 2014
+
|publish_date = 10 August 2020
-
|description = Time-series imaging spectroscopy in a B8 flare
+
|description = Observations suggesting how the coronal tail can wag the photospheric dog
-
|image = Icon221.png}}
+
|image=Icon384.png}}
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|title = A Wonderful Cycle 24 Flare
+
|title =   Energy Partitioning in a Nonthermally Dominated Two-loop Solar Flare
-
|number = 220
+
|number = 383
-
|first_author = S&auml;m Krucker
+
|first_author = Galina MOTORINA
-
|second_author = and Hugh Hudson
+
|second_author = et al.
-
|publish_date = 3 March 2014
+
|publish_date = 3 August 2020
-
|description = There have been quite a few Cycle 24 X-class flares, and this was one of the nicest
+
|description = Modeling the propagation of energy via GX Simulator in an early-impulsive flare
-
|image = Icon220.png}}
+
|image=Icon383.png}}
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|title = Instantaneous Flare Properties
+
|title =   SOL2013-11-10 Eruptive Circular-ribbon Flare with Extended Remote Brightenings
-
|number = 218
+
|number = 382
-
|first_author = Hugh Hudson
+
|first_author = Chang LIU
-
|second_author =  
+
|second_author = et al.
-
|publish_date = 10 February 2014
+
|publish_date = 31 July 2020
-
|description = Let's look at the derivative
+
|description = A circular-ribbon event can launch an eruption by breaking through its separatrix dome
-
|image = Icon218.png}}
+
|image=Icon382.png}}
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|title = Reflection of Coronal Global Waves
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|title =   Extreme-Ultraviolet Late Phase of Solar Flares
-
|number = 217
+
|number = 381
-
|first_author = Ines Kienreich
+
|first_author = Rui LIU
-
|second_author = and Hugh Hudson
+
|second_author =
-
|publish_date = 13 January 2014
+
|publish_date = 22 June 2020
-
|description = A homologous series of global coronal waves reflects at a coronal-hole boundary
+
|description = Both arcade and circular-ribbon flares may sometimes spawn EUV late phase emission
-
|image = Icon217.png}}
+
|image=Icon381.png}}
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|title = Flare Coronal Rain
+
|title =   Energy transport by accelerated particles in the quiet solar atmosphere
-
|number = 216
+
|number = 380
-
|first_author = Hugh Hudson
+
|first_author = Lars FROGNER,
-
|second_author = and S&auml;m Krucker
+
|second_author = Boris GUDIKSEN and Helle BAKKE
-
|publish_date = 23 December 2013
+
|publish_date = 15 June 2020
-
|description = Thermal collapse in flare loops seen in a wonderful new way
+
|description = A first study of non-thermal particles integrated into an MHD simulation of the solar atmosphere
-
|image = Icon216.png}}
+
|image=Icon380.png}}
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|title = The HEROES Mission: High Energy Replicated Optics to Explore the Sun
+
|title =   Quasi-periodic pulsations as indicators of oscillatory processes in solar flares
-
|number = 215
+
|number = 379
-
|first_author = Steven Christe
+
|first_author = Elena KUPRIYANOVA
-
|second_author = and Albert Shih
+
|second_author = et al.
-
|publish_date = 16 December 2013
+
|publish_date = 11 May 2020
-
|description = Focusing optics to explore the high-energy Sun
+
|description = Many, many QPPs
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|image = Icon215.png}}
+
|image=Icon379.png}}
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|title = CMEs on young, solar-type stars
+
|title =   Rejuvenating Solar Flare Termination Shocks as Particle Accelerators
-
|number = 214
+
|number = 378
-
|first_author = Alicia Aarnio
+
|first_author = Bin CHEN
|second_author =  
|second_author =  
-
|publish_date = 9 December 2013
+
|publish_date = 4 May 2020
-
|description = Stellar flares and CMEs behave like solar ones
+
|description = At  last, clear evidence for a long-predicted phenomenon
-
|image = Icon214.png}}
+
|image=Icon378.png}}
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|title = The 1859 Space Weather Event Revisited
+
|title =   Broad symmetrical Doppler-shifted Fe XXI line profiles
-
|number = 213
+
|number = 377
-
|first_author = Ed Cliver
+
|first_author = Vanessa POLITO
|second_author =  
|second_author =  
-
|publish_date = 25 November 2013
+
|publish_date = 20 April 2020
-
|description = Assessing the greatest space-weather events over the centuries
+
|description = It is difficult to explain "evaporation" line profiles by superposition of unresolved flows
-
|image = Icon213.png}}
+
|image=Icon377.png}}
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|title = Hard X-ray Footpoint Asymmetry
+
|title =   Phenomena in the unusually long pre-impulsive phase of SOL2011-06-07
-
|number = 212
+
|number = 376
-
|first_author = Ya-Hui  YANG
+
|first_author = Marian KARLICK&Yacute;,
-
|second_author =  
+
|second_author = Jana KA&Scaron;PAROV&Aacute;, and Robert SYCH
-
|publish_date = 7 November 2013
+
|publish_date = 13 April 2020
-
|description = The behavior of conjugacy in flare footpoints
+
|description = A massive and slowly-rising filament eruption reveals important new signatures of the physics
-
|image = Icon212.png}}
+
|image=Icon376.png}}
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|title = The Halloween Flares and Large-Scale Correlations
+
|title =   Evidence for a Coronal Shock Wave Origin for Relativistic Protons Producing Solar Gamma-Rays and Observed by Neutron Monitors at Earth‎
-
|number = 211
+
|number = 375
-
|first_author = Richard Schwartz
+
|first_author = Athanasios KOULOUMVAKOS
-
|second_author = and Hugh Hudson
+
|second_author = and Gerry SHARE
-
|publish_date = 28 October 2013
+
|publish_date = 6 April 2020
-
|description = Flares bunch up strikingly
+
|description = Successful modeling of prolonged solar gamma-ray emissions and terrestrial ground-level cosmic-ray events
-
|image = Icon211.png}}
+
|image=Icon375.png}}
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|title = Scattering Polarization in Solar Flares
+
|title =   Using overlappogram data to find hot flare plasma
-
|number = 210
+
|number = 374
-
|first_author = Ji&#345;i &#352;t&#283;p&aacute;n
+
|first_author = Louise HARRA
-
|second_author = and Petr Heinzel
+
|  
-
|publish_date = 21 October 2013
+
|publish_date = 23 March 2020
-
|description = Linear polarization produced by anisotropy, rather than particle-beam impact
+
|description = Imaging Fe XXIV at high resolution with the EIS slot data
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|image = Icon210.png}}
+
|image=Icon374.png}}
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|title = The Flare that Time Forgot
+
|title =   SOL2017-09-04 (M5.5) 2017 as a Source of Relativistic Electrons and Protons
-
|number = 209
+
|number = 373
-
|first_author = Paulo Sim&ouml;es
+
|first_author = Alexei STRUMINSKII
-
|second_author = and Hugh Hudson
+
| (see text)
-
|publish_date = 13 October 2013
+
|publish_date = 16 March 2020
-
|description = A long-forgotten Masuda flare reappears
+
|description = Flare-accelerated particles, rather than SEPs, energize sustained gamma-ray emission
-
|image = Icon209.png}}
+
|image=Icon373.png}}
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|title = The Post-Burst Increase
+
|title =   Heating of the solar photosphere during a white-light flare‎
-
|number = 208
+
|number = 372
-
|first_author = Hugh Hudson
+
|first_author = Jan JURČÁK
-
|second_author =
+
| (see text)
-
|publish_date = 30 September 2013
+
|publish_date = 2 March 2020
-
|description = Tutorial on flare thermal sources seen in microwaves
+
|description = The best-ever spectrum of the flare photosphere
-
|image = Icon208.png}}
+
|image=Icon372.png}}
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|title = Peristaltic Shocks: a model
+
|title =   A Hot Cusp-Shaped Confined Solar Flare
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|number = 207
+
|number = 371
-
|first_author = Dana Longcope
+
|first_author = Aaron HERNANDEZ-PEREZ
-
|second_author = and Roger Scott
+
|publish_date = 24 February 2020
-
|publish_date = 16 September 2013
+
|description = A flare may have a prominent hot cusp with the help of any eruption
-
|description = Reconciling reconnection with high preflare coronal densities
+
|image=Icon371.png}}
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|image = Icon207.png}}
+
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|title = Negative Microwave Bursts
+
|title =   The Temporal and Spatial Extension of Gamma-ray Emission from the Sun
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|number = 206
+
|number = 370
-
|first_author = Victor Grechnev
+
|first_author = Nat GOPALSWAMY
 +
|publish_date = 17 February 2020
 +
|description =  Sustained solar &gamma;-rays and solar cosmic rays
 +
|image=Icon370.ng.png}}
 +
 
 +
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|title =  A PSP Perihelion
 +
|number = 369
 +
|first_author = Jessie DUNCAN
|second_author = and Hugh Hudson
|second_author = and Hugh Hudson
-
|publish_date = 3 September 2013
+
|publish_date = 20 January 2020
-
|description = Negative microwave bursts happen, in association with flares and "Hyder flares," and modern instrumentation makes them very interesting again
+
|description = The Parker Solar Probe enters its fourth perihelion already. Now
-
|image = Icon206.png}}
+
|image=Icon369.png}}
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|title = Acceleration-region Densities
+
|title =   Remembering John Brown
-
|number = 205
+
|number = 368
-
|first_author = S&auml;m Krucker
+
|first_author = Alec MacKINNON
-
|second_author = and Marina Battaglia
+
|second_author =  
-
|publish_date = 6 August 2013
+
|publish_date = 13 January 2020
-
|description = Independent constraints on the densities of ions and non-thermal electrons reveal bulk acceleration
+
|description = John passed away unexpectedly on 16 November 2019
-
|image = Icon205.png}}
+
|image=Icon368.png}}
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|title = Implosion and Oscillation
+
|title =   A Global Survey of EUV Coronal Power Spectra
-
|number = 204
+
|number = 367
-
|first_author = Paulo Sim&otilde;es
+
|first_author = Karl Battams
-
|second_author = and Hugh Hudson
+
|second_author =  
-
|publish_date = 29 July 2013
+
|publish_date = 30 December 2019
-
|description = The flare implosion originates in the lower atmosphere and involves GOES soft X-rays
+
|description = Time-series parameter maps of imaged power spectra from an AIA pipeline
-
|image = Icon204.png}}
+
|image=Icon367.png}}
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|title = Minoflares
+
|title =   Cosmic Rays over the Rainbow Bridge
-
|number = 203
+
|number = 366
-
|first_author = Iain Hannah
+
|first_author = Hugh Hudson
-
|second_author = and Hugh Hudson
+
|second_author = Alec MacKinnon
-
|publish_date = 1 July 2013
+
|publish_date = 16 December 2019
-
|description = Earmarks of widespread energetic events in the solar atmosphere
+
|description = Cosmic rays approach the Sun
-
|image = Icon203.png}}
+
|image=Icon366.png}}
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|title = Mars Odyssey/HEND and RHESSI
+
|title =   Spectropolarimetric Insight into Plasma-Sheet Dynamics of a Solar Flare
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|number = 202
+
|number = 365
-
|first_author = Vadim Vybornov
+
|first_author = Ryan French
-
|second_author = and Michael A. Livshits
+
|second_author =  
-
|publish_date = 9 June 2013
+
|publish_date = 9 December 2019
-
|description = An event from far behind the solar limb, observed at Mars
+
|description = CoMP polarization patterns in SOL2017-09-10 are amazing
-
|image = Icon202.png}}
+
|image=Icon365.png}}
{{Nugget Badge
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|title = Hard X-rays in Descent
+
|title =   Lorentz Force Evolution Reveals the Energy Build-up Processes during Recurrent Eruptive Solar Flares‎
-
|number = 201
+
|number = 364
-
|first_author = Aidan O'Flannagain,
+
|first_author = Ranadeep Sarkar,
-
|second_author = John Brown and Peter Gallagher
+
|second_author = Nandita Srivastava and Astrid Veronig
-
|publish_date = 27 May 2013
+
|publish_date = 18 November  2019
-
|description = A novel test of the thick-target model
+
|description = The net Lorentz force clearly exhibits a build-up and release pattern
-
|image = Icon200.png}}
+
|image=Icon364.png}}
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|title = Too few? Too many?
+
|title =   Flare waiting times depend on their magnitudes
-
|number = 200
+
|number = 363
-
|first_author = Paulo Simões
+
|first_author = Hugh Hudson
-
|second_author = and Eduard Kontar
+
|second_author =  
-
|publish_date = 13 May 2013
+
|publish_date = 11 November  2019
-
|description = Too few electrons in the footpoints; too many electrons in the corona
+
|description = Surprising new evidence for the flare build-up and release process
-
|image = Icon201.png}}
+
|image=Icon363.png}}
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|title = A huge gamma-ray burst
+
|title =   Can magnetic reconnection cause solar rainstorms?‎
-
|number = 199
+
|number = 362
-
|first_author = David Smith
+
|first_author = Petra Kohutova
-
|second_author = and Andr&eacute; Csillaghy
+
|second_author =  
-
|publish_date = 6 May 2013
+
|publish_date = 4 November  2019
-
|description = A wonderfully bright gamma-ray burst at Z = 0.34
+
|description = Impulsive coronal heating resulting from reconnection can trigger coronal rain
-
|image = Icon199.png}}
+
|image=Icon362.png}}
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|title = Three-phase life leads to corpulent X-ray loops
+
|title = Non-radial jets on the edges of active regions
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|number = 198
+
|number = 361
-
|first_author = Natasha Jeffrey
+
|first_author = Peter Wyper
-
|second_author = and Eduard Kontar
+
|second_author =  
-
|publish_date = 15 April 2013
+
|publish_date = 14 October 2019
-
|description = RHESSI observations explore structural changes in flaring loops
+
|description = The very common jet structures we see can naturally combine twist and breakout
-
|image = Icon198.png}}
+
|image=Icon361.png}}
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|title = Antipodal Flares
+
|title = Searching SOLfully within the Nuggets
-
|number = 197
+
|number = 360
-
|first_author = B. Pecos
+
|first_author = Hugh Hudson
-
|second_author = and B. Paul
+
|second_author =  
-
|publish_date = 1 April 2013
+
|publish_date = 7 October 2019
-
|description = Flares on a solar diameter suggest a new subatomic particle
+
|description = The IAU target identifier works well for finding items about a particular event
-
|image = Icon197.png}}
+
|image=Icon360.png}}
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|title = Observational evidence for breakout reconnection
+
|title = Submillimeter Radiation as the Thermal Component of the Neupert Effect
-
|number = 196
+
|number = 359
-
|first_author =Henry Aurass
+
|first_author = Guillermo Gim&eacute;nez de Castro
-
|second_author = and Gordon Holman
+
|second_author =  
-
|publish_date = 18 March 2013
+
|publish_date = 31 September 2019
-
|description = Coronal particle acceleration marks the eruption of a SEE
+
|description = Flare radiation at the highest frequencies can be bremsstrahlung
-
|image = Icon196.png}}
+
|image=Icon359.png}}
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|title = Burst-on-Tail (BOT)
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|title = The "Last Best" Flares
-
|number = 195
+
|number = 358
-
|first_author = Alex Struminsky
+
|first_author = Hugh Hudson,
-
|second_author = and Ivan Zimovets
+
|second_author = Ed Cliver, and Brian Dennis
-
|publish_date = 4 March 2013
+
|publish_date = 24 September 2019
-
|description = A "Burst-on-Tail" (BOT) phenomenon
+
|description = Major flares tend to happen at the very ends of sunspot cycles
-
|image = Icon195.png}}
+
|image=Icon358.png}}
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|title = Electron re-acceleration and HXR emission
+
|title = Dynamic Processes of the Moreton Wave on 2014 March 29‎
-
|number = 194
+
|number = 357
-
|first_author = Heather Ratcliffe
+
|first_author = Denis Cabezas
-
|second_author = and Marian Karlick&yacute;
+
|second_author = and the FMT team
-
|publish_date =18 February 2013
+
|publish_date = 16 September 2019
-
|description = Can wave-particle interactions solve the electron number problem?
+
|description = A beautiful Moreton wave excited by the best-observed flare ever
-
|image = Icon194.png}}
+
|image=Icon357.png}}
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|title = Passages of Electron Beams
+
|title = EVE-RHESSI DEM Models and the Low-energy Cutoff for Nonthermal Electrons
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|number = 193
+
|number = 356
-
|first_author = Bin Chen
+
|first_author = Jim McTiernan
-
|second_author = and Tim Bastian
+
|second_author =  
-
|publish_date =11 February 2013
+
|publish_date = 9 September 2019
-
|description = New VLA capability for imaging spectroscopy shows several remarkable features of type III bursts
+
|description = Characterizing flare temperature distributions helps to define the non-thermal energy release
-
|image = Icon193.png}}
+
|image=Icon356.png}}
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|title = Kappa Distribution
+
|title = Stealth Coronal Mass Ejections from Active Regions
-
|number = 192
+
|number = 355
-
|first_author = Mitsuo Oka
+
|first_author = Jennifer O'Kane
|second_author =  
|second_author =  
-
|publish_date =21 January 2013
+
|publish_date = 26 August 2019
-
|description = A simpler function fits both thermal and nonthermal RHESSI spectral ranges
+
|description = Perhaps just feeble versions of the same magnetic disease...
-
|image = Icon192.jpg}}
+
|image=Icon355.png}}
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|title = Hard X-ray Spikes Observed by RHESSI
+
|title = Do Kepler Superflare Stars Really Include Slowly Rotating Sun-like Stars?‎
-
|number = 191
+
|number = 354
-
|first_author = Jiong Qiu
+
|first_author = Yuta NOTSU
|second_author =  
|second_author =  
-
|publish_date =7 January 2013
+
|publish_date = 15 July 2019
-
|description = New software allows RHESSI to study rapid time variations
+
|description = Kepler superflares hint at solar superflares
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|image = Icon191.png}}
+
|image=Icon354.png}}
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|title = Flare Productivity
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|title = Localized Microwave and EUV Bright Structures in an Eruptive Prominence
-
|number = 190
+
|number = 353
-
|first_author = Hugh Hudson
+
|first_author = Jing HUANG
-
|second_author = and Lyndsay Fletcher
+
|second_author =  
-
|publish_date =27 December 2012
+
|publish_date = 22 June 2019
-
|description = An anomalous change in flare productivity per active region
+
|description = Detailed correlations between EUV and microwaves in prominence fine structures
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|image = Icon190.png}}
+
|image=Icon353.png}}
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|title = FOXSI Success
+
|title =   Broken-up hard X-ray spectra found for a loop-top source during a solar limb flare
-
|number = 189
+
|number = 352
-
|first_author = Lindsay Glesener
+
|first_author = Hao NING,
-
|second_author = and S&auml;m Krucker
+
|second_author = Yao CHEN and Jeongwoo LEE
-
|publish_date =27 December 2012
+
|publish_date = 16 June 2019
-
|description = The FOXSI rocket soars, and a flare occurs on schedule
+
|description = SOL2017-09-10 coronal hard X-ray sources
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|image = Icon189.png}}
+
|image=Icon352.png}}
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|title = "Impulse Response Flares" and Gamma Rays
+
|title =   The Cosmic-Ray Shadow and Coronal Magnetism
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|number = 188
+
|number = 351
-
|first_author = Stephen White
+
|first_author = Frederik Tenholt
-
|second_author = and Hugh Hudson
+
|second_author =  
-
|publish_date =13 November 2012
+
|publish_date = 27 May 2019
-
|description = A simplifying paradigm may describe acceleration to the highest energies in flares
+
|description = The coronal magnetic field measured in Antarctica
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|image = Icon188.png}}
+
|image=Icon351.png}}
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|title = Glasgow Callisto optimistic: first light comes in focus
+
|title =   Kristian Birkeland
-
|number = 187
+
|number = 350
-
|first_author = Heather Ratcliffe
+
|first_author = Hugh HUDSON
-
|second_author = and Eduard Kontar
+
|second_author = and Lyndsay FLETCHER
-
|publish_date =29 October 2012
+
|publish_date = 6 May 2019
-
|description = The Glasgow Callisto radio observatory is on line
+
|description = Space weather a century ago: Kristian Birkeland
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|image = Icon187.png}}
+
|image=Icon350.png}}
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|title = Photospheric Temperature Gradient
+
|title =   Warm UV loops heated by small-scale cancellation events
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|number = 186
+
|number = 349
-
|first_author = Martin Fivian
+
|first_author = Seray ŞAHIN
-
|second_author = and Hugh Hudson
+
|second_author = and Vasyl YURCHYSHYN
-
|publish_date =22 October 2012
+
|publish_date = 22 April 2019
-
|description = RHESSI observes the photosphere with exquisite precision
+
|description = Precisely locating the footpoints of warm coronal loops helps identify their source(s) of excitation
-
|image = Icon186.png}}
+
|image=Icon349.png}}
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|title = Energy Partition in Large Solar Eruptive Events
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|title =   Multiple Regions of Shock-accelerated Particles during a Solar Coronal Mass Ejection
-
|number = 185
+
|number = 348
-
|first_author = Gordon Emslie
+
|first_author = Diana MOROSAN
-
|second_author = and Brian Dennis
+
|second_author =
-
|publish_date =5 October 2012
+
|publish_date = 1 April 2019
-
|description = Where the flare energy comes from, and where it goes to.
+
|description = LOFAR identifies herringbone sources within the flank of the SOL2017-09-10 shock - no joke
-
|image = Icon185.png}}
+
|image=Icon348.png}}
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|title = New TGFs Found in the RHESSI Data
+
|title = Persistent Quasi-Periodic Pulsations Detected During the Large X8.2 Solar Flare
-
|number = 184
+
|number = 347
-
|first_author = Thomas Gjesteland
+
|first_author = Laura HAYES
-
|second_author = and Nikolai &Oslash;stgaard
+
|second_author = and Peter GALLAGHER
-
|publish_date =10 September 2012
+
|publish_date = 25 March 2019
-
|description = RHESSI sees many, many gamma-ray flashes from lightning
+
|description = The most beautiful flare has the most beautiful pulsations
-
|image = Icon184.png}}
+
|image=Icon347.png}}
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|title = The RHESSI Flare Catalog
+
|title = Is the coronal magnetic field braiding?
-
|number = 183
+
|number = 346
-
|first_author = Jim McTiernan
+
|first_author = Markus ASCHWANDEN
-
|second_author = and Hugh Hudson
+
|second_author =
-
|publish_date = 29 August 2012
+
|publish_date = 11 March 2019
-
|description = The Catalog is a powerful and easy-to-use access tool for the RHESSI flare observations
+
|description = This iconic cartoon does not relate well to the observations
-
|image = Icon183.png}}
+
|image=Icon346.png}}
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|title = RHESSI Catches Gamma-Ray Bursts
+
|title = An energetic pre-flare: electron distributions in magnetic reconnection outflows
-
|number = 182
+
|number = 345
-
|first_author = Jakub Ripa
+
|first_author = Marina BATTAGLIA,
-
|second_author =  
+
|second_author = Eduard KONTAR and Galina MOTORINA
-
|publish_date = 15 August 2012
+
|publish_date = 18 February 2019
-
|description = RHESSI catches gamma-ray bursts, and they come in three flavors
+
|description = Assessing energy partition in a pre-impulsive flare development
-
|image = Icon182.jpg}}
+
|image=Icon345.png}}
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|title = Dense Loop Flares
+
|title = Linear Polarization in H-alpha Flares
-
|number = 181
+
|number = 344
-
|first_author = Jingnan Guo
+
|first_author = Tomoko KAWATE
-
|second_author = and Gordon Emslie
+
|second_author = and Yoichiro HANAOKA
-
|publish_date =6 August 2012
+
|publish_date = 4 February 2019
-
|description = Direct electron mapping teaches us about the structure of electron acceleration in flares
+
|description = H-alpha polarization is rarely observable but, in once case, very suggestive
-
|image = Icon181.png}}
+
|image=Icon344.png}}
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|title = The Slowest Flare
+
|title = Short-Period Waves
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|number = 180
+
|number = 343
-
|first_author = Sam Freeland
+
|first_author = Sijie YU
-
|second_author = and Hugh Hudson
+
|second_author = and Bin CHEN
-
|publish_date =23 July 2012
+
|publish_date = 21 January 2019
-
|description = A flare with an exceptionally slow rise phase, more than 5 hours in GOES 1-8 A soft X-rays
+
|description = New decimetric imaging spectroscopy suggests Alfv&eacute;nic energy transport in flares
-
|image = Icon180.png}}
+
|image=Icon343.png}}
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|title = Dimmings and Sustained Gamma-Ray Events
+
|title = The Interesting RHESSI/SAS Archive
-
|number = 179
+
|number = 342
-
|first_author = Hugh Hudson
+
|first_author = Hugh HUDSON
-
|second_author = and Nicola Omodei
+
|second_author = and Martin FIVIAN
-
|publish_date =25 June 2012
+
|publish_date = 8 January 2019
-
|description = Coronal disruptions reveal themselves as depletions and gamma-ray emissions
+
|description = The full mission database shows RHESSI to have been very stable geometrically
-
|image = Icon179.png}}
+
|image=Icon342.png}}
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|title = Flare Nimbus
+
|title = Homologous White Light Solar Flares‎
-
|number = 178
+
|number = 341
-
|first_author = Susan McKenna-Lawlor
+
|first_author = Paolo ROMANO
-
|second_author =  
+
|second_author = and Abouazza ELMHAMDI
-
|publish_date =14 June 2012
+
|publish_date = 31 December 2018
-
|description = The Flare Nimbus, its history and significance
+
|description = Homologous white-light flares, in rapid succession, and coronal null points
-
|image = Icon178.jpg}}
+
|image=Icon341.png}}
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|title = RHESSI and the Transit of Venus I
+
|title = The flight of FOXSI-3
-
|number = 177
+
|number = 340
-
|first_author = Hugh Hudson
+
|first_author = Lindsay GLESENER
-
|second_author = and Martin Fivian
+
|second_author = and Noriyuki NARUKAGE
-
|publish_date =1 June 2012
+
|publish_date = 10 December 2018
-
|description = RHESSI prepares for the June 5/6 Venus transit
+
|description = Single-photon counting and direct focusing across hard and soft energies
-
|image = Icon177.jpg}}
+
|image=Icon340.png}}
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|title = Time Profiles of Solar Flare Densities
+
|title = Stellar Flares and Starspots
-
|number = 176
+
|number = 339
-
|first_author = Ryan Milligan
+
|first_author = Lauren DOYLE
-
|second_author = and Michael Kennedy
+
|second_author =
-
|publish_date =21 May 2012
+
|publish_date = 3 December 2018
-
|description = Density-diagnostic line ratios in EVE spectra
+
|description = Stellar flares don't spatially match their starspots
-
|image = Icon176.png}}
+
|image=Icon339.png}}
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|title = Solar energetic electron events over one solar cycle
+
|title = Neutron Production in Solar Flares
-
|number = 175
+
|number = 338
-
|first_author = Linghua Wang
+
|first_author = Ron MURPHY
-
|second_author =  
+
|second_author = and Gerry SHARE
-
|publish_date =7 May 2012
+
|publish_date = 26 November 2018
-
|description = The statistics of SEP electrons
+
|description = Neutron astronomy helps us understand solar flares
-
|image = Icon175.png}}
+
|image=Icon338.png}}
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|title = A Shocking Type II
+
|title = Cycle 25 Strikes Again
-
|number = 174
+
|number = 337
-
|first_author = Hazel Bain,
+
|first_author = Kamil BICZ
-
|second_author = S&auml;m Krucker and Lyndsay Glesener
+
|second_author =
-
|publish_date =30 April 2012
+
|publish_date = 20 November 2018
-
|description = The properties of global coronal waves sorted out
+
|description = A second, larger Cycle 25 sunspot
-
|image = icon174.png}}
+
|image=Icon337.png}}
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|title = RHESSI and IRIS
+
|title = Remembering Marcos Machado via his research
-
|number = 173
+
|number = 336
-
|first_author = Hugh Hudson
+
|first_author = Hugh HUDSON
-
|second_author =  
+
|second_author =
-
|publish_date =16 April 2012
+
|publish_date = 13 November 2018
-
|description = Flare gold at the foot of the rainbow
+
|description = Recalling a friend and colleague, and admiring his final paper
-
|image = icon173.png}}
+
|image=Icon336.png}}
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|title = A New Day Dawns
+
|title = CORONAS/SPIRIT Mg XII and Nanoflares‎
-
|number = 172
+
|number = 335
-
|first_author = Dale Gary
+
|first_author = Anton REVA
-
|second_author =  
+
|second_author =
-
|publish_date =26 March 2012
+
|publish_date = 22 October 2018
-
|description = Soon, true microwave imaging spectroscopy
+
|description = Monochromatic Mg XII spectroheliography sets severe limits on nanoflare heating models
-
|image = icon172.png}}
+
|image=Icon335.png}}
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|title = An Fe Cascade
+
|title = White-light Emission and Non-thermal Electrons‎
-
|number = 171
+
|number = 334
-
|first_author = Hugh Hudson
+
|first_author = Kyoung-Sun LEE
-
|second_author =  
+
|second_author =
-
|publish_date =12 March 2012
+
|publish_date = 8 October 2018
-
|description =  Iron everywhere in the EVE spectra
+
|description =  An intimate relationship between accelerated electrons and visible flare continuum
-
|image = icon171.png}}
+
|image=Icon334.png}}
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|title = Do slow waves trigger pulsations in two-ribbon flares? An observational search‎
+
|title = Coronal Hard X-ray Sources Revisited
-
|number = 170
+
|number = 333
-
|first_author = A. Inglis
+
|first_author = Brian DENNIS
-
|second_author = and B. Dennis
+
|second_author =
-
|publish_date = 27 February 2012
+
|publish_date = 24 September 2018
-
|description =  Slow waves, QPPs, and hard X-rays
+
|description =  Reporting some over-interpretation of the evidence for "coronal thick targets"
-
|image = icon170.png}}
+
|image=Icon333.png}}
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|title = RHESSI's Tenth Anniversary
+
|title = Photospheric response to a flare
-
|number = 169
+
|number = 332
-
|first_author = B. Dennis
+
|first_author = Mike WHEATLAND
-
|second_author = and R. Lin
+
|second_author =
-
|publish_date = 15 February 2012
+
|publish_date = 17 September 2018
-
|description =  On RHESSI's tenth, a top-ten discovery list
+
|description =  Sudden changes in the magnetic field in the low atmosphere associated with particle acceleration
-
|image = icon169.png}}
+
|image=Icon332.png}}
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|title = Supra-Arcade Downflows
+
|title =   New Views of Global Solar Magnetic Field Evolution Over Four Solar Cycles
-
|number = 168
+
|number = 331
-
|first_author = S. Savage
+
|first_author = David WEBB
-
|second_author = and D. McKenzie
+
|second_author =
-
|publish_date = 23 January 2012
+
|publish_date = 27 August 2018
-
|description = A re-interpretation of the famous SAD tadpoles
+
|description = A digital archive of Pat McIntosh's 44 years of solar synoptic observations 
-
|image = icon168.png}}
+
|image=Icon331.png}}
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|title = Flare Observations of the EUV Continua
+
|title =   Understanding the co-spatial return current in solar flares
-
|number = 167
+
|number = 330
-
|first_author = R. Milligan
+
|first_author = Meriem ALAOUI
 +
|second_author =  and Gordon HOLMAN
 +
|publish_date = 6 August 2018
 +
|description = Completing the circuit in a thick-target model 
 +
|image=Icon330.png}}
 +
 
 +
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|title =  3D Magnetic Reconnection at a Coronal Null Point
 +
|number = 329
 +
|first_author = Shane MALONEY,
 +
|second_author = Aidan O'Flannagain and Peter Gallagher
 +
|publish_date = 30 July 2018
 +
|description = Large-scale reconnection involved in Type I radio noise storm 
 +
|image=Icon329.png}}
 +
 
 +
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|title =  The true dawn of multimessenger astronomy
 +
|number = 328
 +
|first_author = Hugh Hudson
|second_author =  
|second_author =  
-
|publish_date = 16 January 2012
+
|publish_date = 23 July 2018
-
|description = The flare EUV continua now routinely observed
+
|description = Ever since the Carrington flare  
-
|image = icon167.png}}
+
|image=Icon328.png}}
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|title = No Hard X-rays from Comet Lovejoy
+
|title = Microwave Imaging Spectroscopy of Flares is Here‎
-
|number = 166
+
|number = 327
-
|first_author = H. Hudson
+
|first_author = Dale E. Gary,
-
|second_author = and P. Saint-Hilaire
+
|second_author = EOVSA and RHESSI Teams
-
|publish_date = 19 December 2011
+
|publish_date = 16 July 2018
-
|description = An amazing sungrazing comet, but not detectable at high energies
+
|description = Microwave imaging spectroscopy takes a giant leap forward with SOL2017-09-10
-
|image = icon166.png}}
+
|image=Icon327.png}}
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|title = Modelling spatially resolved X-ray polarization
+
|title = Coronal nanoflares powered by footpoint reconnection
-
|number = 165
+
|number = 326
-
|first_author = N. Jeffrey
+
|first_author = Pradeep Chitta,
-
|second_author = and E. Kontar
+
|second_author = Hardi Peter, and Sami Solanki
-
|publish_date = 12 December 2011
+
|publish_date = 9 July 2018
-
|description = Spatial distribution of X-ray polarization, and its implications
+
|description = Coronal nanoflares in active region cores can be powered by the magnetic reconnection in the lower solar atmosphere
-
|image = icon165.png}}
+
|image=Icon326.png}}
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|title = Slowly but surely towards the huge amount of energy II
+
|title = A remarkable, but confused, coronal hard X-ray source
-
|number = 164
+
|number = 325
-
|first_author = S. Ko&#322;oma&#324;ski
+
|first_author = Alexandra Lysenko,
-
|second_author = and T. Mrozek
+
|second_author = Larisa Kashapova and Hugh Hudson
-
|publish_date = 28 November 2011
+
|publish_date = 25 June 2018
-
|description = Analysis of the huge energies of loop-top sources in flares
+
|description = A remarkable flare in 1999 adds to our short list of extended coronal hard X-ray/microwave sources  
-
|image = icon164.png}}
+
|image=Icon325.png}}
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|title = X-ray and H-alpha Flare Impulses
+
|title = Understanding HMI pseudocontinuum in white-light flares‎
-
|number = 163
+
|number = 324
-
|first_author = K. Radziszewski
+
|first_author = Michal &Scaron;vanda
-
|second_author = and P. Rudawy
+
|second_author = et al.
-
|publish_date = 14 November 2011
+
|publish_date = 28 May 2018
-
|description = Strikingly precise correlations of H-alpha kernels and hard X-ray bursts
+
|description = The HMI pseudocontinuum (Ic) is ill-calibrated in regions with strong fields, i.e. for white-light flares
-
|image = icon163.jpg}}
+
|image=Icon324.png}}
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|title = Slowly but surely towards the huge amount of energy I
+
|title = To beam or not to beam - that is (still) the question
-
|number = 162
+
|number = 323
-
|first_author = Urszula B&#261;k-St&#281;&#347;licka
+
|first_author = Paulo Sim&otilde;es
-
|second_author = and Tomasz Mrozek, Sylwester Ko&#322;oma&#324;ski
+
|second_author = and Hugh Hudson
-
|publish_date = 31 October 2011
+
|publish_date = 14 May 2018
-
|description = The energetics of "slow LDEs"
+
|description = Descriptions of the lower solar atmosphere of flares <i>ca.</i> Cycle 21 sound surprisingly current
-
|image = icon162.png}}
+
|image=Icon323.png}}
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|title = Quasi-Periodic Pulsations: Fermi/GBM Results
+
|title = Observation of Cosmic Ray Spallation Events from SoHO‎
-
|number = 161
+
|number = 322
-
|first_author = David Gruber
+
|first_author = Serge Koutchmy
-
|second_author = and Pawel Lachowicz
+
|second_author = and Ehsan Tavabi
-
|publish_date = 24 October 2011
+
|publish_date = 7 May 2018
-
|description = Dealing with red noise
+
|description = LASCO's images capture high-energy nuclear interactions from cosmic-ray hits
-
|image = icon161.png}}
+
|image=Icon322.png}}
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|title = A Flare in 3D
+
|title = A Sunspot from Cycle 25 for sure
-
|number = 160
+
|number = 321
-
|first_author = Hugh Hudson
+
|first_author = Tomek Mrozek
-
|second_author = and Juan Carlos Martinez Oliveros
+
|second_author = and Hugh Hudson
-
|publish_date = 10 October 2011
+
|publish_date = 10 April 2018
-
|description = Solar astrometry in 3D
+
|description = YES! Cycle 25 is here!
-
|image = icon160.gif}}
+
|image=Icon321.png}}
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|title = Solar Max Arrives
+
|title = Blue-wing enhancement of the Mg II h and k lines in a flare
-
|number = 159
+
|number = 320
-
|first_author = Hugh Hudson
+
|first_author = Akiko TEI
-
|second_author = and Richard Schwartz
+
|second_author =
-
|publish_date = 28 September 2011
+
|publish_date = 9 April 2018
-
|description = Seven X-class flares already in 2011
+
|description = Flare loops involve a cool upflow preceding the hot evaporation flow
-
|image = icon159.png}}
+
|image=Icon320.png}}
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|title = Two-stage SEE Shows Reconnection
+
|title = NuSTAR detects X-ray flares in the quiet Sun
-
|number = 158
+
|number = 319
-
|first_author = Yang Su
+
|first_author = Matej Kuhar
-
|second_author = and Brian Dennis
+
|second_author = and S&auml;m Krucker
-
|publish_date = 8 September 2011
+
|publish_date = 26 March 2018
-
|description =  Reconnection late in a flare
+
|description =  Quiet-Sun flares may not be powerful, but they look a lot like ordinary flares
-
|image = icon158.png}}
+
|image=Icon319.png}}
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|title = Scattered Light: Inverse Compton Scattering and Coronal Hard X-ray Sources
+
|title = Homologous CME/flares from AR 12371
-
|number = 157
+
|number = 318
-
|first_author = B. Chen
+
|first_author = Panditi Vemareddy
-
|second_author = and T. S. Bastian
+
|second_author = and Pascal Demoul&iacute;n
-
|publish_date = 17 August 2011
+
|publish_date = 19 March 2018
-
|description =  Inverse Compton radiation - gaining momentum
+
|description =  An excellent set of homologous flare/CMEs analyzed and explained
-
|image = icon157.png}}
+
|image=Icon318.png}}
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|title = X-ray, EUV & WL emission heights observed by RHESSI & SDO
+
|title = Non-Maxwellian Diagnostics from SDO/EVE Spectra of an X-class Flare
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|number = 156
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|number = 317
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|first_author = Marina Battaglia
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|first_author = Elena Dzif&#x10d;&aacute;kov&aacute;
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|second_author = and Eduard Kontar
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|second_author = and Jaroslav Dud&iacute;k
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|publish_date = 24 July 2011
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|publish_date = 16 February 2018
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|description =  A first - the relative height of hard X-ray and white-light flare sources
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|description =  Ratios of high-excitation ions can readily detect &kappa;-distributions in flare plasmas
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|image = icon156.png}}
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|image=Icon317.png}}
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|title = Hard X-rays and Sympathy
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|title = Joint MinXSS and RHESSI Flare X-ray Spectra between 1 and 15 keV
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|number = 155
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|number = 316
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|first_author = Hugh Hudson
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|first_author = Chris Moore, Brian Dennis and the MinXSS Science Team
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|second_author =
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|publish_date = 5 February 2018
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|publish_date = 13 July 2011
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|description =  MinXSS adds systematic views of flare soft X-ray spectra to RHESSI imagery
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|description =  A hard X-ray spike elicits a sympathetic response
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|image=Icon316.png}}
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|image = icon155.png}}
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|title = Suzaku Microflares
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|title = Parameterized Flare Models with Chromospheric Compressions
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|number = 154
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|number = 315
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|first_author = S. Ishikawa
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|first_author = Adam Kowalski & Joel Allred
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|second_author =
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|publish_date = 17 January 2018
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|publish_date = 30 June 2011
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|description =  A new approach to modeling the lower flare atmosphere
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|description =  Microflares too have powerful particle acceleration
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|image=FlareModelsKowalskiAllred.png}}
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|title = Acceleration without Heating
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|title = A Curious Sunspot Group in 2018
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|number = 153
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|number = 314
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|first_author = G. Fleishman &
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|first_author = Hugh Hudson
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|second_author = E. Kontar
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|publish_date = 14 January 2018
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|publish_date = 13 June 2011
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|description =  The first new sunspot group of 2018 emerged at the wrong latitude
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|description =  Strong hard X-rays and weak soft X-rays - breaking the paradigm?
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|image = Icon314.png}}
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|title = DIY spectroscopy: Analyzing AIA diffraction patterns
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|title = Tecumseh's Eclipse and Astrophysics
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|number = 152
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|number = 313
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|first_author = C. L. Raftery &
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|first_author = Hugh Hudson
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|second_author = S. Krucker
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|publish_date = 25 December 2017
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|publish_date = 30 May 2011
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|description =  The solar corona was first recognized as such, and named, in an eclipse of 1806
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|description =  Imaging spectroscopy in the EUV, at AIA resolution
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|image = Icon313.png}}
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|image = icon152.png}}
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|title = EVE/ESP and the Neupert Effect
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|title = Hunting for Hidden Tiny Flares
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|number = 151
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|number = 312
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|first_author = H. Hudson
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|first_author = Shin-nosuke ISHIKAWA
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|second_author =
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|publish_date = 27 November 2017
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|publish_date = 9 May 2011
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|description =  FOXSI-2 says that episodic energy releases are still viable as a part of the coronal heating problem.
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|description =  The Neupert Effect works, sort of, in a limb gamma-ray flare
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|image = Icon312.png}}
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|title = Decimetric pulsations and coronal X-ray sources
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|title = Unusual Type III Burst Dynamics Produced by Diverging Magnetic Fields
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|number = 150
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|number = 311
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|first_author = A. Benz,
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|first_author = Patrick McCauley
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|second_author = M. Battaglia, and N. Vilmer
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|publish_date = 20 November 2017
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|publish_date = 18 April 2011
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|description =  Unusual type III bursts follow coronal separatrix structures.
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|description =  Radio pulsations may illuminate a strongly non-radial current sheet
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|image = Icon311.png}}
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|image = icon150.png}}
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|title = The Alfven Speed above a Sunspot, and Gamma-rays
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|title = Valderrama in the 21st Century
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|number = 149
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|number = 310
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|first_author = H. Hudson
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|first_author = Hugh Hudson
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|second_author = and L. Fletcher
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|publish_date = 31 October 2017
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|publish_date = 12 April 2011
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|description =  A newly-described white-light flare from the 19th century!..
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|description =  Flare effects in sunspot umbrae
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|image = Icon310.png}}
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|image = icon149.png}}
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|title = Slow Magnetoacoustic Waves in Two-Ribbon Flares
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|title = Electron Scattering in the Flaring Corona
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|number = 148
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|number = 309
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|first_author = V. Nakariakov
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|first_author = Sophie Musset
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|second_author = and I. Zimovets
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|publish_date = 24 October 2017
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|publish_date = 17 March 2011
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|description = Diffusive transport may contribute to the trapping of electrons in coronal X-ray sources
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|description = Wave dynamics explains arcade development
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|image = Icon309.png}}
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|image = icon148.png}}
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|title = First Sunquake of Solar Cycle 24 Observed by Solar Dynamics Observatory
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|title = The Power of Turbulence
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|number = 147
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|number = 308
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|first_author = A. G. Kosovichev
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|first_author = Nic Bian
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|second_author =
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|publish_date = 25 September 2017
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|publish_date = 7 March 2011
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|description = Turbulent energy content may underlie flare energy transfer, magnetic reconnection, and particle acceleration
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|description = An X-class flare - and a sunquake
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|image = Icon308.png}}
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|image = icon147.png}}
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|title = M is for Magnifique Part Deux
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|title = The Kelvin Force and Loop-Top Concentration
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|number = 146
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|number = 307
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|first_author = Steven Christe
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|first_author = Kiyoto SHIBASAKI
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|second_author = and Andrew Inglis
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|publish_date = 18 September 2017
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|publish_date = 22 February 2011
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|description = New physics can explain the perplexing overpressure at the flare looptop regions
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|description = A type II radio burst but no CME and introducing a new way to search for waves in SDO. (CORRECTION There is a CME!)
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|image = Icon307.png}}
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|image = icon146.png}}
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|title = At last, the EUV Spectrum
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|title = The Last Best Flare of Cycle 24?
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|number = 145
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|number = 306
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|first_author = Hugh Hudson
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|first_author = S&auml;m Krucker
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|second_author = and Hugh Hudson
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|publish_date = 11 September 2017
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|description = Right on schedule, Cycle 24 has produced a great flare (with a GLE)
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|image = Icon306.png}}
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|title = Electric Current Neutralization and Solar Eruption in Active Regions
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|number = 305
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|first_author = Yang LIU
|second_author =  
|second_author =  
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|publish_date = 8 February 2011
+
|publish_date = 28 August 2017
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|description = The main flare radiated energy is not in the EUV
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|description = Active current systems in the solar corona don't have return currents
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|image = icon145.png}}
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|image = Icon305.png}}
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|title = Black and White Flares
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|title = RHESSI and the Megamovie
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|number = 144
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|number = 304
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|first_author = Juan Carlos Martinez Oliveros
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|first_author = Hugh Hudson, Laura Peticolas,
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|second_author = and Charles Lindsey
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|second_author = and Juan Carlos Mart&iacute;nez Oliveros
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|publish_date = 24 January 2011
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|publish_date = 31 July 2017
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|description = HMI sees a black-light flare (?)
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|description = A wholly new way to view a solar eclipse, and to do solar astrometry
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|image = icon144.png}}
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|image = Icon304.png}}
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|title = The Flares of the RHESSI Monograph
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|title = Bastille Day 2017
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|number = 143
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|number = 303
|first_author = Hugh Hudson
|first_author = Hugh Hudson
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|second_author = and Gordon Emslie
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|second_author = and S&auml;m Krucker
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|publish_date = 11 January 2011
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|publish_date = 24 July 2017
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|description = The top ten RHESSI flares thus far
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|description = Interesting flares really do happen on Bastille Day...
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|image = icon143.png}}
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|image = Icon303.png}}
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|title = Brilliant Timing
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|title = The Solar X-ray Limb III
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|number = 142
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|number = 302
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|first_author = S&auml;m Krucker
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|first_author = Marina Battaglia
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|second_author = and Hugh Hudson
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|second_author = and Gordon Hurford
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|publish_date = 20 December 2010
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|publish_date = 12 June 2017
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|description = Hinode and RHESSI observations strain the credibility of the thick-target model
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|description = RHESSI succeeds with a wholly new way to measure the solar diameter
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|image = icon142.png}}
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|image = Icon302.png}}
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|title = M is for Magnifique
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|title = Double Coronal X-ray and Microwave Sources Associated With A Magnetic Breakout Solar Eruption
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|number = 141
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|number = 301
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|first_author = Steven Christe
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|first_author = Yao CHEN
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|second_author = and Andrew Inglis
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|second_author =
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|publish_date = 6 December 2010
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|publish_date = 29 May 2017
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|description = RHESSI and SDO see a remarkable flare
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|description = A different explanation of the double coronal hard X-ray sources
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|image = icon141.png}}
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|image = Icon301.png}}
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|title = A Lasso Model for Solar Gamma-ray Events
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|number = 300
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|first_author = Hugh Hudson
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|second_author =
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|publish_date = 15 May 2017
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|description = A toy model hoping to explain the SEP/LAT relationship
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|image = Icon300.png}}
 +
 
 +
[[RHESSI Science Nuggets 200 to 299|Next Nuggets]]

Revision as of 19:45, 28 December 2023

Welcome to the RHESSI Science Nuggets: science notes from RHESSI. The following is a time-ordered list of the latest Nuggets added to the wiki. An alphabetical list of wiki Nuggets is also available as well as yearly lists. We welcome volunteer authors - please see our page of help for authors

465 When it rippled in one place and exploded in another
25 December 2023 by Ivan ZIMOVETS
Icon465.png
Pulsations precede a flare, but seem unrelated. Click the title to read more.
464 Solar flares: evaporation and simulation‎
18 December 2023 by Malcolm DRUETT
Icon464.png
Fitting beam electrons into multi-dimensional models. Click the title to read more.
463 Pre-impulsive and Impulsive Phases of the March 28, 2022 Sub-Terahertz Flare
11 December 2023 by Galina G. MOTORINA
Icon463.png
A flare with an increasing sub-THz spectrum and sub-THZ precursor information. Click the title to read more.
462 Coronal Bright Points
27 November 2023 by Daniel NÓBREGA-SIVERIO
Icon462.png
Bright EUV rowel-like structures can result from null-point reconnection. Click the title to read more.
461 Aurora-like Radio Emission from a Sunspot
20 November 2023 by Sijie YU
Icon461.png
Maser action above a sunspot. Click the title to read more.
460 Search for a Flare Anticipation Index (FAI)
13 November 2023 by Hugh HUDSON and Jim McTiernan
Icon460.png
Quantifying flare precursors on a few-minute time scale. Click the title to read more.
459 Bouncing motions of fast electrons using Nobeyama Radioheliograph
6 November 2023 by Keitarou MATSUMOTO
Icon459.png
Solar evidence for conservation of second adiabatic invariant in particle motion. Click the title to read more.
458 Impact of nanoflare heating in the lower solar atmosphere
30 October 2023 by Helle BAKKE
Icon458.png
The behavior of nanoflare fast electrons in Bifrost models. Click the title to read more.
457 Precise timing of flare footpoint sources from mid-infrared observations‎
23 October 2023 by Paulo SIMÕES et al.
Icon457.png
Mid-IR observations at high spatial and high temporal resolution: Conjugacy. Click the title to read more.
456 The Greatest GOES Flares‎
25 September 2023 by Hugh HUDSON and Ed CLIVER
Icon456.png
The greatest GOES events, re-analyzed, fall short of expectations. Click the title to read more.
455 Introducing SunSketcher
11 September 2023 by Hugh HUDSON and Gordon EMSLIE
Icon455.png
Galloping towards roundup in the 2024 total solar eclipse. Click the title to read more.
454 TeV Gamma rays from the Quiescent Sun
21 August 2023 by Mehr Un NISA and John BEACOM
Icon454.png
Solar photons at unprecedented high energies. Click the title to read more.
453 Temporal and Spatial Characteristics of Hard X-Ray Sources in Flare Model with Vertical Current Sheet
7 August 2023 by Alexander SHABALIN, Eugenia OVCHINNIKOVA, and Yuri CHARIKOV
Icon453.png
Modeling betatron acceleration in current-sheet development.. Click the title to read more.
452 Spatial Distribution of Magnetic Reconnection Rate in an M6.5 Solar Flare
12 June 2023 by Ju JING
Icon452.png
Linking hard X-rays to high-resolution images that show reconnection rates.. Click the title to read more.
451 Statistical study of Type III bursts and associated HXR emissions
29 May 2023 by Nicole VILMER and Tomin JAMES
Icon451.png
Linking electron populations escaping from the Sun with those that RHESSI detects.. Click the title to read more.
450 Solar flare hard X-rays from the anchor points of an eruptive filament
15 May 2023 by Muriel STIEFEL
Icon450.png
A rare "four-ribbon" flare has been detected in hard X-rays.. Click the title to read more.
449 Did a Solar Flare Accelerate all the Ambient Electrons in the Coronal Acceleration Region?...
1 May 2023 by Gordon EMSLIE, Eduard KONTAR, Galina MOTORINA, and Brian DENNIS
Icon449.png
Considering SOL2017-09-10, probably not.. Click the title to read more.
448 Diagnostics of Spatially-Extended Turbulent Acceleration and Transport
24 April 2023 by Morgan STORES
Icon448.png
Drilling down into the detailed structure of solar-flare energy release by including turbulence with particle acceleration.. Click the title to read more.
447 RHESSI's Re-entry
17 April 2023 by Pascal SAINT-HILAIRE and Hugh HUDSON
Icon447.png
The final demise of RHESSI is this week. Click the title to read more.
446 A Glasgow geomagnetic observation of a solar flare
13 March 2023 by Hugh HUDSON, John MALONE-LEIGH, Graham WOAN, and Chris OSBORNE
Icon 446.png
Irish and Scottish geomagnetic observatories see a crochet much like that of the Carrington event. Click the title to read more.

{

445 Particle Acceleration in Two Coronal Jets
27 February 2023 by Yixian ZHANG
Icon445.png
Coronal jets with hard X-ray sources at disjoint locations. Click the title to read more.
444 The Curious First Sunquake of Solar Cycle 25‎
13 February 2023 by Alexander KOSOVICHEV
Icon444.png
A double whammy: two distinct sunquakes from SOL2022-05-10.. Click the title to read more.
443 Hard X-ray Pulsations via Gaussian Decomposition
30 January 2023 by Hannah COLLIER and Laura HAYES
Icon443.png
Flare hard X-ray time variations decomposed objectively. Click the title to read more.
442 A possible coronal magnetic flare precursor
16 January 2023 by Enrico LANDI
Icon442.png
Novel measurements of the coronal magnetic field may help with flare prediction. Click the title to read more.
441 A slow HOPE with microwave context
12 December 2022 by Hugh HUDSON
Icon441.png
A new microwave facility at Chashan Observatory, and a prototypical HOPE. Click the title to read more.
440 Rapid variations of Si IV spectra in a flare observed by IRIS at a sub-second cadence
14 November 2022 by Juraj LÖRINČÍK
Icon440.png
Transition-region lines in a flare have a Doppler component revealing quasi-periodic pulsations. Click the title to read more.
439 A Significant Sudden Ionospheric Disturbance Associated with a Massive Gamma-ray Burst
31 October 2022 by Laura HAYES and Peter GALLAGHER
Icon439.png
A first SID observed in broad daylight, from a source far far away. Click the title to read more.
438 Effects of Coronal Structures on the Dynamics of the Global Coronal Wave of SOL2017-09-10‎
17 October 2022 by Huidong HU, Ying D. LIU, and Bei ZHU
Icon438.png
The amazing global coronal wave of SOL2017-09-10 wrapped around the whole Sun, and displayed transmission and reflection at both polar coronal holes. Click the title to read more.
437 KW-Sun: The Konus-Wind Solar Flare Database in Hard X-Ray and Soft Gamma-Ray Ranges
26 September 2022 by Alexandra LYSENKO
Icon437.png
An unrivaled hard X-ray and gamma-ray database is entering its third activity maximum. Click the title to read more.
436 First Detection of Kink Oscillations with Solar Orbiter
19 September 2022 by Sihui ZHONG et al.
Icon436.png
SolO sees coronal oscillations as well as AIA can, and even better. Click the title to read more.
435 Energetic Neutral Hydrogen from Large Solar Flares
6 September 2022 by Glenn MASON
Icon435.png
A rediscovered data treasury reveals the occurrence of many flare/CME events producing solar high-energy neutral atoms. Click the title to read more.
434 Fifty-year Anniversary of the First Detection of Gamma rays from a Solar Flare
8 August 2022 by Jim Ryan, Brian Dennis, and Phil Dunphy
Icon434.png
The rich astrophysics of gamma-ray astronomy began with solar observations fifty years ago. Click the title to read more.
433 Fast Prograde Flows in Solar Active Regions
25 July 2022 by Hugh HUDSON
Icon433.png
Unexpected, unpredicted, and not modeled yet - weird flows in hot active-region loops. Click the title to read more.
432 Undetected Minority-polarity Flux, Moss, and Coronal Heating
11 July 2022 by Yi-Ming WANG
Icon432.png
There's plenty of room in "unipolar" active regions for both polarities, and there is good evidence for them. Click the title to read more.
431 Thermal/Nonthermal with MinXSS and RHESSI
13 June 2022 by Shunsaku NAGASAWA
Icon431.png
Time-domain studies of improved X-ray spectra reveal a "super-hot' component. Click the title to read more.
430 Sun-as-a-star spectroscopic observations of the line-of-sight velocity of a solar eruption on October 28, 2021
30 May 2022 by Yu XU and Hui TIAN
Icon430.png
The observation of the full 3d velocity of a CME, for an anniversary event. Click the title to read more.
429 Carl Størmer
15 April 2022 by Hugh HUDSON and Lyndsay FLETCHER
Icon429.png
Størmer and the theory of trapping in loops. Click the title to read more.
428 Solar Hard X-rays with Insight
21 March 2022 by Wei WANG and Ping ZHANG
Icon428.png
A spectacular limb flare introduces Insight/HXMT, a new observational resource. Click the title to read more.
427 Probing chromospheric current sheets using SST and ALMA co-observations
21 February 2022 by João da SILVA SANTOS
Icon427.png
Emerging magnetic flux appears in ALMA images reflecting coronal current sheets. Click the title to read more.
426 A demonstration of STIX hard X-ray imaging spectroscopy capabilities for an X-class flare (SOL2021-10-28)
7 February 2022 by Andrea BATTAGLIA, Hannah COLLIER, and Säm KRUCKER
Icon426.png
STIX imaging of an X-class flare marks its success. Click the title to read more.
425 A solar flare driven by thermal conduction observed in mid-infrared
24 January 2022 by Guillermo GIMÉNEZ de CASTRO
Icon425.png
Strong 10-micron emission from a GOES C2 flare suggests conductive heating. Click the title to read more.
424 Disk Occultation of a Lopsided Sun‎
10 January 2022 by Hugh HUDSON, Stephen WHITE and Säm KRUCKER
Icon424.png
Observing a spotless Sun can enable observations of the faint corona.. Click the title to read more.
423 Resolving two distinct thermal X-ray components in a compound solar flare
28 December 2021 by Zhenjun ZHOU and Rui LIU
Icon423.png
Superhot coronal sources may be independent loop systems. Click the title to read more.
422 Bridging solar flares to coronal mass ejections
14 December 2021 by Markus ASCHWANDEN
Icon422.png
The Neupert effect allows us to trace coronal mass ejections seamlessly. Click the title to read more.
421 The Jakimiec Diagnostic Diagram
29 November 2021 by Hugh HUDSON
Icon421.png
The joint variation of GOES temperature and emission measure discloses new features via an old tool. Click the title to read more.
420 First look at ALMA/HInode/IRIS microflares
8 November 2021 by Toshifumi SHIMIZU et al.
Icon420.png
High-resolution ALMA and multiwavelength observations of microflaring. Click the title to read more.
419 Thomson scattering near sunspots
25 October 2021 by Pascal Saint-Hilaire et al.
Icon419.png
Completing the modeling of low-coronal Thomson polarimetry. Click the title to read more.
418 A Non-PFSS Global Coronal Model
11 October 2021 by Oliver RICE and Anthony YEATES
Icon418.png
Modeling as convenient as PFSS but much more realistic. Click the title to read more.
417 Manifold Nonthermality
27 September 2021 by Marina BATTAGLIA et al.
Icon417.png
Even weak flares involve multiple sites of non thermal activity. Click the title to read more.
416 X-Rays from a Type I Radio Burst
20 September 2021 by R. RAMESH
Icon416.png
A first identification of type I radio emission with hot plasma. Click the title to read more.
415 Do Hot Onsets Predict Flare Magnitudes?
30 August 2021 by Hugh HUDSON
Icon415.png
Maybe we can tell how big a flare is going to be from its initial development.... Click the title to read more.
414 Confined or Eruptive?
16 August 2021 by Ting LI et al.
Icon414.png
Increased magnetic flux reduces CME eruptivity. Click the title to read more.
413 Impulsive and Gradual Eruptive Gamma Flares and Associated CMEs
19 July 2021 by Alexey STRUMINSKY, Irina GRIGORIEVA and Andrei SADOVSKI
Icon373.png
Extreme behavior of flare/CME events explained by environment. Click the title to read more.
412 The Morphology of Flare Time Profiles
12 July 2021 by Larisa KASHAPOVA et al.
Icon412.png
Systematic comparison of solar and stellar flaring time profiles. Click the title to read more.
411 Flare Pulsation and the Heliosphere
5 July 2021 by Brendan CLARKE et al.
Icon411.png
Flare pulsations link closely to the distant heliosphere. Click the title to read more.
410 STIX, the Hard X-Ray Telescope on board Solar Orbiter
28 June 2021 by Andrea Francesco BATTAGLIA and Säm KRUCKER
Icon410.png
STIX is operational and producing great data. Click the title to read more.
409 Nonequilibrium Ionization of Flare Plasma Observed by Hinode/EIS
14 June 2021 by Shinsuke IMADA
Icon409.png
Evidence for non-equilibrium ionization in the current sheet of SOL2017-09-10. Click the title to read more.
408 Effects of Flares on Solar p-modes
26 April 2021 by Maria-Cristina RABELLO SOARES and Frederic BAUDIN
Icon408.png
No detectable p-mode amplitude changes due to solar flares. Click the title to read more.
407 Subsecond Spikes in Solar Flare X-ray Flux as Seen by Fermi GBM
19 April 2021 by Trevor KNUTH and Lindsay GLESENER
Icon407.png
A new analysis technique pushes hard X-ray time scales to 0.1 sec or faster. Click the title to read more.
406 Negative He 10830 Flare Ribbons and Non-thermal Electrons
12 April 2021 by Graham KERR
Icon406.png
A 1D radiation hydrodynamics model can explain the dark leading edges of He I flare ribbons. Click the title to read more.
405 Tracing the sources of gradual solar energetic particle events
29 March 2021 by David H. BROOKS and Stephanie L. YARDLEY
Icon405.png
Chemical abundances in SEPs suggest an origin in flare-related moss regions. Click the title to read more.
404 The Superflare SOL2017-09-06: from submm to mid-IR
15 March 2021 by Guillermo (Guigue) GIMÉNEZ DE CASTRO
Icon404.png
Glimpsing the "missing decades" of the flare emission spectrum. Click the title to read more.
403 The Neupert Effect Revisited
8 March 2021 by Jiong QIU
Icon403.png
Two time scales for heating individual flare strands. Click the title to read more.
402 FLUKA as a tool for interpreting flare gamma-rays
1 March 2021 by Alec MACKINNON
Icon402.png
The nuclear physics of solar flares captured in a detailed model. Click the title to read more.
401 A Collective Study of 11 NuSTAR Microflares
22 February 2021 by Jessie DUNCAN and Lindsay GLESENER
Icon401.png
Swarms of NuSTAR micro flares. Click the title to read more.

{{

400 A Solar FRB
15 February 2021 by Dale GARY and Hugh HUDSON
Icon400.png
A new frontier in the solar time domain. Click the title to read more.
399 Richard Schwartz
25 January 2021 by Brian DENNIS and Hugh HUDSON
Icon399.jpg
Remembering a friend and colleague. Click the title to read more.
398 Observing Solar Flare X-ray Polarization with Prospective CubeSat Missions
4 January 2021 by Natasha JEFFREY
Icon398.png
The polarization of the solar X-ray spectrum generally remains to be observed. Click the title to read more.
397 Solar effects in the local interstellar medium
14 December 2020 by Don GURNETT and Hugh HUDSON
Icon397.png
Relativistic particle events observed _in situ_ in the interstellar medium. Click the title to read more.
396 Investigation of Small-Scale Energy Releases in Hard X-rays with ​FOXSI
7 December 2020 by Subramania ATHIRAY and Juliana VIEVERING
Icon396.png
Hard X-rays and high temperatures from the feeblest microflares. Click the title to read more.
395 What drives impulsive coronal heating?
30 November 2020 by Pradeep CHITTA et al.
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Impulsive footpoint emissions suggest magnetic reconnection in the chromosphere. Click the title to read more.
394 Probing the solar coronal heating function with slow magnetoacoustic waves
16 November 2020 by Dmitrii KOLOTKOV et al.
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Coronal heating models meet damped slow magnetoacoustic waves. Click the title to read more.
393 Self-Consistent Flare Model
2 November 2020 by Wenzhi RUAN and Rony KEPPENS
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Energy transport by fast particles made self-consistent with MHD flare modeling. Click the title to read more.
392 Hot Flare Onsets
26 October 2020 by Hugh HUDSON et al.
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The initial soft X-ray temperatures of solar flares tend to be in the 10-15 MK range. Click the title to read more.
391 Electric Current Neutralization and Eruption
19 October 2020 by Ellis AVALLONE and Xudong SUN
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Coronal currents without neutralizing return currents appear to. Click the title to read more.
390 Prediction of Solar Cycle 25
5 October 2020 by Leif SVALGAARD
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Now we know how big the next solar maximum will be. Click the title to read more.
389 Flare/CME Cartoon Archive
27 September 2020 by Hugh HUDSON
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A new edition of the Flare/CME archive, nearly a half kilotoon now. Click the title to read more.
388 Submerged Flare Acoustic Sources
13 September 2020 by Juan Camilo BUITRAGO CASAS and Angel MARTÍNEZ
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Flare acoustic radiation emanates from a source _inside_ the Sun. Click the title to read more.
387 Circular Ribbon Flare at Microwaves
31 August 2020 by Jeongwoo LEE
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Breakout reconnection reveals itself via microwave polarization measurements.. Click the title to read more.
386 Relation of Non-neutralized electric currents and the activity in active regions
24 August 2020 by P. VEMAREDDY
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Non-neutralized coronal current systems contribute to CME eruptions. Click the title to read more.
385 White-light emission and photospheric magnetic field changes in flares
17 August 2020 by J. Sebastián CASTELLANOS DURÁN and Lucia KLEINT
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There are strong correlations between white-light flare emissions and line-of-sight magnetic field changes. Click the title to read more.
384 Sunspot Differential Rotation in an X-class Flare
10 August 2020 by Richard GRIMES, Balázs PINTÉR and Huw MORGAN
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Observations suggesting how the coronal tail can wag the photospheric dog. Click the title to read more.
383 Energy Partitioning in a Nonthermally Dominated Two-loop Solar Flare
3 August 2020 by Galina MOTORINA et al.
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Modeling the propagation of energy via GX Simulator in an early-impulsive flare. Click the title to read more.
382 SOL2013-11-10 Eruptive Circular-ribbon Flare with Extended Remote Brightenings
31 July 2020 by Chang LIU et al.
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A circular-ribbon event can launch an eruption by breaking through its separatrix dome. Click the title to read more.
381 Extreme-Ultraviolet Late Phase of Solar Flares
22 June 2020 by Rui LIU
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Both arcade and circular-ribbon flares may sometimes spawn EUV late phase emission. Click the title to read more.
380 Energy transport by accelerated particles in the quiet solar atmosphere
15 June 2020 by Lars FROGNER, Boris GUDIKSEN and Helle BAKKE
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A first study of non-thermal particles integrated into an MHD simulation of the solar atmosphere. Click the title to read more.
379 Quasi-periodic pulsations as indicators of oscillatory processes in solar flares
11 May 2020 by Elena KUPRIYANOVA et al.
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Many, many QPPs. Click the title to read more.
378 Rejuvenating Solar Flare Termination Shocks as Particle Accelerators
4 May 2020 by Bin CHEN
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At last, clear evidence for a long-predicted phenomenon. Click the title to read more.
377 Broad symmetrical Doppler-shifted Fe XXI line profiles
20 April 2020 by Vanessa POLITO
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It is difficult to explain "evaporation" line profiles by superposition of unresolved flows. Click the title to read more.
376 Phenomena in the unusually long pre-impulsive phase of SOL2011-06-07
13 April 2020 by Marian KARLICKÝ, Jana KAŠPAROVÁ, and Robert SYCH
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A massive and slowly-rising filament eruption reveals important new signatures of the physics. Click the title to read more.
375 Evidence for a Coronal Shock Wave Origin for Relativistic Protons Producing Solar Gamma-Rays and Observed by Neutron Monitors at Earth‎
6 April 2020 by Athanasios KOULOUMVAKOS and Gerry SHARE
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Successful modeling of prolonged solar gamma-ray emissions and terrestrial ground-level cosmic-ray events. Click the title to read more.
374 Using overlappogram data to find hot flare plasma
23 March 2020 by Louise HARRA
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Imaging Fe XXIV at high resolution with the EIS slot data. Click the title to read more.
373 SOL2017-09-04 (M5.5) 2017 as a Source of Relativistic Electrons and Protons
16 March 2020 by Alexei STRUMINSKII
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Flare-accelerated particles, rather than SEPs, energize sustained gamma-ray emission. Click the title to read more.
372 Heating of the solar photosphere during a white-light flare‎
2 March 2020 by Jan JURČÁK
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The best-ever spectrum of the flare photosphere. Click the title to read more.
371 A Hot Cusp-Shaped Confined Solar Flare
24 February 2020 by Aaron HERNANDEZ-PEREZ
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A flare may have a prominent hot cusp with the help of any eruption. Click the title to read more.
370 The Temporal and Spatial Extension of Gamma-ray Emission from the Sun
17 February 2020 by Nat GOPALSWAMY
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Sustained solar γ-rays and solar cosmic rays. Click the title to read more.
369 A PSP Perihelion
20 January 2020 by Jessie DUNCAN and Hugh Hudson
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The Parker Solar Probe enters its fourth perihelion already. Now. Click the title to read more.
368 Remembering John Brown
13 January 2020 by Alec MacKINNON
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John passed away unexpectedly on 16 November 2019. Click the title to read more.
367 A Global Survey of EUV Coronal Power Spectra
30 December 2019 by Karl Battams
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Time-series parameter maps of imaged power spectra from an AIA pipeline. Click the title to read more.
366 Cosmic Rays over the Rainbow Bridge
16 December 2019 by Hugh Hudson Alec MacKinnon
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Cosmic rays approach the Sun. Click the title to read more.
365 Spectropolarimetric Insight into Plasma-Sheet Dynamics of a Solar Flare
9 December 2019 by Ryan French
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CoMP polarization patterns in SOL2017-09-10 are amazing. Click the title to read more.
364 Lorentz Force Evolution Reveals the Energy Build-up Processes during Recurrent Eruptive Solar Flares‎
18 November 2019 by Ranadeep Sarkar, Nandita Srivastava and Astrid Veronig
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The net Lorentz force clearly exhibits a build-up and release pattern. Click the title to read more.
363 Flare waiting times depend on their magnitudes
11 November 2019 by Hugh Hudson
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Surprising new evidence for the flare build-up and release process. Click the title to read more.
362 Can magnetic reconnection cause solar rainstorms?‎
4 November 2019 by Petra Kohutova
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Impulsive coronal heating resulting from reconnection can trigger coronal rain. Click the title to read more.
361 Non-radial jets on the edges of active regions
14 October 2019 by Peter Wyper
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The very common jet structures we see can naturally combine twist and breakout. Click the title to read more.
360 Searching SOLfully within the Nuggets
7 October 2019 by Hugh Hudson
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The IAU target identifier works well for finding items about a particular event. Click the title to read more.
359 Submillimeter Radiation as the Thermal Component of the Neupert Effect
31 September 2019 by Guillermo Giménez de Castro
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Flare radiation at the highest frequencies can be bremsstrahlung. Click the title to read more.
358 The "Last Best" Flares
24 September 2019 by Hugh Hudson, Ed Cliver, and Brian Dennis
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Major flares tend to happen at the very ends of sunspot cycles. Click the title to read more.
357 Dynamic Processes of the Moreton Wave on 2014 March 29‎
16 September 2019 by Denis Cabezas and the FMT team
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A beautiful Moreton wave excited by the best-observed flare ever. Click the title to read more.
356 EVE-RHESSI DEM Models and the Low-energy Cutoff for Nonthermal Electrons
9 September 2019 by Jim McTiernan
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Characterizing flare temperature distributions helps to define the non-thermal energy release. Click the title to read more.
355 Stealth Coronal Mass Ejections from Active Regions
26 August 2019 by Jennifer O'Kane
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Perhaps just feeble versions of the same magnetic disease.... Click the title to read more.
354 Do Kepler Superflare Stars Really Include Slowly Rotating Sun-like Stars?‎
15 July 2019 by Yuta NOTSU
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Kepler superflares hint at solar superflares. Click the title to read more.
353 Localized Microwave and EUV Bright Structures in an Eruptive Prominence
22 June 2019 by Jing HUANG
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Detailed correlations between EUV and microwaves in prominence fine structures. Click the title to read more.
352 Broken-up hard X-ray spectra found for a loop-top source during a solar limb flare
16 June 2019 by Hao NING, Yao CHEN and Jeongwoo LEE
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SOL2017-09-10 coronal hard X-ray sources. Click the title to read more.
351 The Cosmic-Ray Shadow and Coronal Magnetism
27 May 2019 by Frederik Tenholt
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The coronal magnetic field measured in Antarctica. Click the title to read more.
350 Kristian Birkeland
6 May 2019 by Hugh HUDSON and Lyndsay FLETCHER
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Space weather a century ago: Kristian Birkeland. Click the title to read more.
349 Warm UV loops heated by small-scale cancellation events
22 April 2019 by Seray ŞAHIN and Vasyl YURCHYSHYN
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Precisely locating the footpoints of warm coronal loops helps identify their source(s) of excitation. Click the title to read more.
348 Multiple Regions of Shock-accelerated Particles during a Solar Coronal Mass Ejection
1 April 2019 by Diana MOROSAN
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LOFAR identifies herringbone sources within the flank of the SOL2017-09-10 shock - no joke. Click the title to read more.
347 Persistent Quasi-Periodic Pulsations Detected During the Large X8.2 Solar Flare
25 March 2019 by Laura HAYES and Peter GALLAGHER
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The most beautiful flare has the most beautiful pulsations. Click the title to read more.
346 Is the coronal magnetic field braiding?
11 March 2019 by Markus ASCHWANDEN
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This iconic cartoon does not relate well to the observations. Click the title to read more.
345 An energetic pre-flare: electron distributions in magnetic reconnection outflows
18 February 2019 by Marina BATTAGLIA, Eduard KONTAR and Galina MOTORINA
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Assessing energy partition in a pre-impulsive flare development. Click the title to read more.
344 Linear Polarization in H-alpha Flares
4 February 2019 by Tomoko KAWATE and Yoichiro HANAOKA
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H-alpha polarization is rarely observable but, in once case, very suggestive. Click the title to read more.
343 Short-Period Waves
21 January 2019 by Sijie YU and Bin CHEN
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New decimetric imaging spectroscopy suggests Alfvénic energy transport in flares. Click the title to read more.
342 The Interesting RHESSI/SAS Archive
8 January 2019 by Hugh HUDSON and Martin FIVIAN
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The full mission database shows RHESSI to have been very stable geometrically. Click the title to read more.
341 Homologous White Light Solar Flares‎
31 December 2018 by Paolo ROMANO and Abouazza ELMHAMDI
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Homologous white-light flares, in rapid succession, and coronal null points. Click the title to read more.
340 The flight of FOXSI-3
10 December 2018 by Lindsay GLESENER and Noriyuki NARUKAGE
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Single-photon counting and direct focusing across hard and soft energies. Click the title to read more.
339 Stellar Flares and Starspots
3 December 2018 by Lauren DOYLE
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Stellar flares don't spatially match their starspots. Click the title to read more.
338 Neutron Production in Solar Flares
26 November 2018 by Ron MURPHY and Gerry SHARE
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Neutron astronomy helps us understand solar flares. Click the title to read more.
337 Cycle 25 Strikes Again
20 November 2018 by Kamil BICZ
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A second, larger Cycle 25 sunspot. Click the title to read more.
336 Remembering Marcos Machado via his research
13 November 2018 by Hugh HUDSON
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Recalling a friend and colleague, and admiring his final paper. Click the title to read more.
335 CORONAS/SPIRIT Mg XII and Nanoflares‎
22 October 2018 by Anton REVA
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Monochromatic Mg XII spectroheliography sets severe limits on nanoflare heating models. Click the title to read more.
334 White-light Emission and Non-thermal Electrons‎
8 October 2018 by Kyoung-Sun LEE
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An intimate relationship between accelerated electrons and visible flare continuum. Click the title to read more.
333 Coronal Hard X-ray Sources Revisited
24 September 2018 by Brian DENNIS
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Reporting some over-interpretation of the evidence for "coronal thick targets". Click the title to read more.
332 Photospheric response to a flare
17 September 2018 by Mike WHEATLAND
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Sudden changes in the magnetic field in the low atmosphere associated with particle acceleration. Click the title to read more.
331 New Views of Global Solar Magnetic Field Evolution Over Four Solar Cycles
27 August 2018 by David WEBB
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A digital archive of Pat McIntosh's 44 years of solar synoptic observations. Click the title to read more.
330 Understanding the co-spatial return current in solar flares
6 August 2018 by Meriem ALAOUI and Gordon HOLMAN
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Completing the circuit in a thick-target model. Click the title to read more.
329 3D Magnetic Reconnection at a Coronal Null Point
30 July 2018 by Shane MALONEY, Aidan O'Flannagain and Peter Gallagher
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Large-scale reconnection involved in Type I radio noise storm. Click the title to read more.
328 The true dawn of multimessenger astronomy
23 July 2018 by Hugh Hudson
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Ever since the Carrington flare. Click the title to read more.
327 Microwave Imaging Spectroscopy of Flares is Here‎
16 July 2018 by Dale E. Gary, EOVSA and RHESSI Teams
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Microwave imaging spectroscopy takes a giant leap forward with SOL2017-09-10. Click the title to read more.
326 Coronal nanoflares powered by footpoint reconnection
9 July 2018 by Pradeep Chitta, Hardi Peter, and Sami Solanki
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Coronal nanoflares in active region cores can be powered by the magnetic reconnection in the lower solar atmosphere. Click the title to read more.
325 A remarkable, but confused, coronal hard X-ray source
25 June 2018 by Alexandra Lysenko, Larisa Kashapova and Hugh Hudson
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A remarkable flare in 1999 adds to our short list of extended coronal hard X-ray/microwave sources. Click the title to read more.
324 Understanding HMI pseudocontinuum in white-light flares‎
28 May 2018 by Michal Švanda et al.
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The HMI pseudocontinuum (Ic) is ill-calibrated in regions with strong fields, i.e. for white-light flares. Click the title to read more.
323 To beam or not to beam - that is (still) the question
14 May 2018 by Paulo Simões and Hugh Hudson
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Descriptions of the lower solar atmosphere of flares ca. Cycle 21 sound surprisingly current. Click the title to read more.
322 Observation of Cosmic Ray Spallation Events from SoHO‎
7 May 2018 by Serge Koutchmy and Ehsan Tavabi
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LASCO's images capture high-energy nuclear interactions from cosmic-ray hits. Click the title to read more.
321 A Sunspot from Cycle 25 for sure
10 April 2018 by Tomek Mrozek and Hugh Hudson
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YES! Cycle 25 is here!. Click the title to read more.
320 Blue-wing enhancement of the Mg II h and k lines in a flare
9 April 2018 by Akiko TEI
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Flare loops involve a cool upflow preceding the hot evaporation flow. Click the title to read more.
319 NuSTAR detects X-ray flares in the quiet Sun
26 March 2018 by Matej Kuhar and Säm Krucker
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Quiet-Sun flares may not be powerful, but they look a lot like ordinary flares. Click the title to read more.
318 Homologous CME/flares from AR 12371
19 March 2018 by Panditi Vemareddy and Pascal Demoulín
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An excellent set of homologous flare/CMEs analyzed and explained. Click the title to read more.
317 Non-Maxwellian Diagnostics from SDO/EVE Spectra of an X-class Flare
16 February 2018 by Elena Dzifčáková and Jaroslav Dudík
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Ratios of high-excitation ions can readily detect κ-distributions in flare plasmas. Click the title to read more.
316 Joint MinXSS and RHESSI Flare X-ray Spectra between 1 and 15 keV
5 February 2018 by Chris Moore, Brian Dennis and the MinXSS Science Team
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MinXSS adds systematic views of flare soft X-ray spectra to RHESSI imagery. Click the title to read more.
315 Parameterized Flare Models with Chromospheric Compressions
17 January 2018 by Adam Kowalski & Joel Allred
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A new approach to modeling the lower flare atmosphere. Click the title to read more.
314 A Curious Sunspot Group in 2018
14 January 2018 by Hugh Hudson
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The first new sunspot group of 2018 emerged at the wrong latitude. Click the title to read more.
313 Tecumseh's Eclipse and Astrophysics
25 December 2017 by Hugh Hudson
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The solar corona was first recognized as such, and named, in an eclipse of 1806. Click the title to read more.
312 Hunting for Hidden Tiny Flares
27 November 2017 by Shin-nosuke ISHIKAWA
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FOXSI-2 says that episodic energy releases are still viable as a part of the coronal heating problem.. Click the title to read more.
311 Unusual Type III Burst Dynamics Produced by Diverging Magnetic Fields
20 November 2017 by Patrick McCauley
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Unusual type III bursts follow coronal separatrix structures.. Click the title to read more.
310 Valderrama in the 21st Century
31 October 2017 by Hugh Hudson
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A newly-described white-light flare from the 19th century!... Click the title to read more.
309 Electron Scattering in the Flaring Corona
24 October 2017 by Sophie Musset
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Diffusive transport may contribute to the trapping of electrons in coronal X-ray sources. Click the title to read more.
308 The Power of Turbulence
25 September 2017 by Nic Bian
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Turbulent energy content may underlie flare energy transfer, magnetic reconnection, and particle acceleration. Click the title to read more.
307 The Kelvin Force and Loop-Top Concentration
18 September 2017 by Kiyoto SHIBASAKI
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New physics can explain the perplexing overpressure at the flare looptop regions. Click the title to read more.
306 The Last Best Flare of Cycle 24?
11 September 2017 by Säm Krucker and Hugh Hudson
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Right on schedule, Cycle 24 has produced a great flare (with a GLE). Click the title to read more.
305 Electric Current Neutralization and Solar Eruption in Active Regions
28 August 2017 by Yang LIU
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Active current systems in the solar corona don't have return currents. Click the title to read more.
304 RHESSI and the Megamovie
31 July 2017 by Hugh Hudson, Laura Peticolas, and Juan Carlos Martínez Oliveros
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A wholly new way to view a solar eclipse, and to do solar astrometry. Click the title to read more.
303 Bastille Day 2017
24 July 2017 by Hugh Hudson and Säm Krucker
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Interesting flares really do happen on Bastille Day.... Click the title to read more.
302 The Solar X-ray Limb III
12 June 2017 by Marina Battaglia and Gordon Hurford
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RHESSI succeeds with a wholly new way to measure the solar diameter. Click the title to read more.
301 Double Coronal X-ray and Microwave Sources Associated With A Magnetic Breakout Solar Eruption
29 May 2017 by Yao CHEN
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A different explanation of the double coronal hard X-ray sources. Click the title to read more.
300 A Lasso Model for Solar Gamma-ray Events
15 May 2017 by Hugh Hudson
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A toy model hoping to explain the SEP/LAT relationship. Click the title to read more.

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