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 = Syrovatskii's "constant density" approximation
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|title = Is there HOPE for Hyder flares...
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|number = 289
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|number = 468
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|first_author = Hugh Hudson
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|first_author = Hugh HUDSON
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|second_author = and Paulo Sim&otilde;es
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|publish_date = 15 March 2024
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|publish_date = 30 December 2016
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|description = Filament eruptions/Hyder flares/<i>disparitions brusques</i> may all show HOPE
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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=Icon468.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 = Sun-as-a-star Analysis of the M8.7 Flare on 2022 October 2 Using H-alpha and EUV Spectra Taken by SMART/SDDI and SDO/EVE
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|number = 288
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|number = 467
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|first_author = Hamish Reid
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|first_author = Takato OTSU
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|second_author = and Nicole Vilmer
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|publish_date = 19 February 2024
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|publish_date = 19 December 2016
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|description = Whole-Sun spectroscopic observations can readily detect ejecta
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|description = Correlations across the radio and X-ray spectra imply related populations of source electrons
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|image=Icon467.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 =  Unexpected Asymmetry in GeV Emission
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|number = 287
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|number = 466
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|first_author = Alexandra Lysenko
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|first_author = Bruno ARSIOLI and Elena ORLANDO
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|second_author = and the Konus/WIND Team
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|publish_date = 15 January 2024
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|publish_date = 20 November 2016
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|description = The high-energy solar gamma radiation shows inexplicable but fascinating properties
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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=Icon466.png}}
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|image = Icon287.png}}
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|title =  Microwave Emission from Twisted Magnetic Fields
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|title =  When it rippled in one place and exploded in another
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|number = 286
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|number = 465
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|first_author = Mykola Gordovskyy
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|first_author = Ivan ZIMOVETS
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|second_author = and Philippa Browning
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|publish_date = 25 December 2023
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|publish_date = 13 November 2016
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|description = Pulsations precede a flare, but seem unrelated
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|description = The inherent magnetic twist of a flaring loop can be inferred from microwave polarization signatures.
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|image=Icon465.png}}
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|image = Icon286.png}}
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|title =  Spatio-Temporal Dynamics of Flare Hard X-ray Pulsations
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|title =  Solar flares: evaporation and simulation‎
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|number = 285
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|number = 464
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|first_author = Ivan Zimovets,
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|first_author = Malcolm DRUETT
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|second_author = Sergey Kuznetsov, Alexander Morgachev, and Alexei Struminsky
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|publish_date = 18 December 2023
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|publish_date = 31 October 2016
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|description = Fitting beam electrons into multi-dimensional models
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|description = In pulsating flare energy release, the hard X-ray source peaks have different locations.
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|image=Icon464.png}}
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|image = Icon285.png}}
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|title =  Flare-induced Impulsive Sunspot Rotation caught in High Resolution‎
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|title =  Pre-impulsive and Impulsive Phases of the March 28, 2022 Sub-Terahertz Flare
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|number = 284
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|number = 463
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|first_author = Chang Liu
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|first_author = Galina G. MOTORINA
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|second_author = and Haimin Wang
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|publish_date = 11 December 2023
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|publish_date = 24 October 2016
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|description = A flare with an increasing sub-THz spectrum and sub-THZ precursor information
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|description = The tail wags the dog - short time scales for coronal stresses on sunspot structure
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|image=Icon463.png}}
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|image = Icon284.png}}
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|title =  Hard X-ray Polarimetry from Tian Gong 2‎
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|title =  Coronal Bright Points
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|number = 283
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|number = 462
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|first_author = Wojtek Hajdas
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|first_author = Daniel N&Oacute;BREGA-SIVERIO
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|second_author =
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|publish_date = 27 November 2023
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|publish_date = 20 October 2016
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|description = Bright EUV rowel-like structures can result from null-point reconnection
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|description = A novel hard X-ray polarimeter achieves solar "first light"
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|image=Icon462.png}}
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|image = Icon283.png}}
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|title =  A flare in the deep solar atmosphere
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|title =  Aurora-like Radio Emission from a Sunspot
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|number = 282
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|number = 461
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|first_author = Richard Schwartz
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|first_author = Sijie YU
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|second_author = and Hugh Hudson
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|publish_date = 20 November 2023
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|publish_date = 26 September 2016
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|description = Maser action above a sunspot
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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=Icon461.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 =  Search for a Flare Anticipation Index (FAI)
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|number = 281
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|number = 460
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|first_author = Karin Dissauer
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|first_author = Hugh HUDSON
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|second_author = and Manuela Temmer
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|second_author = and Jim McTiernan
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|publish_date = 16 August 2016
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|publish_date = 13 November 2023
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|description = Perspective matters - application of STEREO views to coronal dimming
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|description = Quantifying flare precursors on a few-minute time scale
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|image = Icon281.png}}
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|image=Icon460.png}}
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|title =  Solar flare neutrons observed on the ground and in space
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|title =  Bouncing motions of fast electrons using Nobeyama Radioheliograph
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|number = 280
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|number = 459
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|first_author = Alexander MacKinnon
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|first_author = Keitarou MATSUMOTO
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|second_author =
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|publish_date = 6 November 2023
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|publish_date = 12 August 2016
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|description = Solar evidence for conservation of second adiabatic invariant in particle motion
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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=Icon459.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 = Impact of nanoflare heating in the lower solar atmosphere
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|number = 279
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|number = 458
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|first_author = Andreas Klassen
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|first_author = Helle BAKKE
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|second_author = and the SEPT/STEREO team
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|publish_date = 30 October 2023
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|publish_date = 13 July 2016
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|description = The behavior of nanoflare fast electrons in Bifrost models
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|description = Solar energetic electrons may have complicated and informative distributions in the interplanetary medium
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|image=Icon458.png}}
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|image = Icon279.png}}
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|title = Initiation of a type II radio burst without a CME
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|title =   Precise timing of flare footpoint sources from mid-infrared observations‎
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|number = 278
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|number = 457
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|first_author = Pankaj Kumar,
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|first_author = Paulo SIM&Otilde;ES et al.
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|second_author = Davina Innes, and Kyung-Suk Cho
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|publish_date = 23 October 2023
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|publish_date = 4 July 2016
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|description = Mid-IR observations at high spatial and high temporal resolution: Conjugacy
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|description = A global coronal shock wave without a CME driver
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|image=Icon457.png}}
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|image = Icon278.png}}
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|title = Spotlessness returns
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|title =   The Greatest GOES Flares‎
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|number = 277
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|number = 456
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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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|second_author = and Ed CLIVER
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|publish_date = 27 June 2016
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|publish_date = 25 September 2023
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|description = The Sun had no spots for extended periods in June, 2016
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|description = The greatest GOES events, re-analyzed, fall short of expectations
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|image = Icon277.png}}
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|image=Icon456.png}}
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|title = RHESSI has resumed operations
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|title =   Introducing SunSketcher
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|number = 276
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|number = 455
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|first_author = Albert Shih,
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|first_author = Hugh HUDSON
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|second_author = Brian Dennis and S&auml;m Krucker
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|second_author = and Gordon EMSLIE
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|publish_date = 20 June 2016
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|publish_date = 11 September 2023
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|description = A successful anneal and RHESSI continues to provide data
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|description = Galloping towards roundup in the 2024 total solar eclipse
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|image = Icon276.png}}
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|image=Icon455.png}}
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|title = Non-thermal recombination in solar flares and microflares
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|title =   TeV Gamma rays from the Quiescent Sun
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|number = 275
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|number = 454
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|first_author = Jeffrey Reep
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|first_author = Mehr Un NISA
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|second_author = and John Brown
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|second_author = and John BEACOM
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|publish_date = 6 June 2016
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|publish_date = 21 August 2023
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|description = A heretofore unrecognized emission mechanism for solar hard X-rays
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|description = Solar photons at unprecedented high energies
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|image = Icon275.png}}
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|image=Icon454.png}}
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|title = Data-driven radiative hydrodynamic modeling of SOL2014-03-29
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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 = 274
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|number = 453
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|first_author = Fatima Rubio da Costa
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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 = 10 May 2016
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|publish_date = 7 August 2023
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|description = Intense pulses of energy modeled with RADYN
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|description = Modeling betatron acceleration in current-sheet development.
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|image = Icon274.png}}
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|image=Icon453.png}}
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|title =Electron acceleration and hard X-ray emission from SOL2013-11-09
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|title =   Spatial Distribution of Magnetic Reconnection Rate in an M6.5 Solar Flare
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|number = 273
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|number = 452
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|first_author =Yuri Tsap
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|first_author = Ju JING
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|second_author = and Galina Motorina
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|publish_date = 12 June 2023
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|publish_date = 5 May 2016
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|description = Linking hard X-rays to high-resolution images that show reconnection rates.
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|description = Testing the thick-target model in an interesting flare
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|image=Icon452.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 =   Statistical study of Type III bursts and associated HXR emissions
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|number = 272
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|number = 451
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|first_author = Hugh Hudson
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|first_author = Nicole VILMER and Tomin JAMES
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|second_author =
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|publish_date = 29 May 2023
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|publish_date = 30 April 2016
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|description = Linking electron populations escaping from the Sun with those that RHESSI detects.
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|description = Stellar activity measured by flare rates over the eons
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|image=Icon451.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 =   Solar flare hard X-rays from the anchor points of an eruptive filament
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|number = 271
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|number = 450
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|first_author = Ivan Sharykin
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|first_author = Muriel STIEFEL
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|second_author = and Alexei Kuznetsov
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|publish_date = 15 May 2023
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|publish_date = 25 April 2016
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|description = A rare "four-ribbon" flare has been detected in hard X-rays.
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|description = Flux-rope geometry via radio polarization signs
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|image=Icon450.png}}
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|image = Icon271.png}}
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|title = An Unreported White-light Prominence
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|title =   Did a Solar Flare Accelerate all the Ambient Electrons in the Coronal Acceleration Region?...
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|number = 270
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|number = 449
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|first_author = Matt Penn
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|first_author = Gordon EMSLIE, Eduard KONTAR,
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|second_author = and Hugh Hudson
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|second_author = Galina MOTORINA, and Brian DENNIS
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|publish_date = 28 March 2016
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|publish_date = 1 May 2023
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|description = Massive flare ejecta observed visually
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|description = Considering SOL2017-09-10, probably not.
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|image = Icon270.png}}
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|image=Icon449.png}}
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|title = RHESSI's 5th Anneal
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|title =   Diagnostics of Spatially-Extended Turbulent Acceleration and Transport
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|number = 269
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|number = 448
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|first_author = Albert Shih
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|first_author = Morgan STORES
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|second_author = and Brian Dennis
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|publish_date = 24 April 2023
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|publish_date = 23 February 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 = RHESSI has begun annealing its detectors, interrupting the flow of data for several weeks
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|image=Icon448.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 =   RHESSI's Re-entry
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|number = 268
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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 = Melissa Pesce-Rollins, and Larisa Kashapova
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|second_author = Hugh HUDSON
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|publish_date = 22 February 2016
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|publish_date = 17 April 2023
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|description = The Fermi/LAT long-duration events look like SOL1969-03-30
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|description = The final demise of RHESSI is this week
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|image = Icon268.png}}
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|image=Icon447.png}}
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|title = When the Earth’s atmosphere becomes dynamic…
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|title =   A Glasgow geomagnetic observation of a solar flare
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|number = 267
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|number = 446
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|first_author = Manuela Temmer,
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|first_author = Hugh HUDSON, John MALONE-LEIGH,
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|second_author = Sandro Krauss and Astrid Veronig
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|second_author = Graham WOAN, and Chris OSBORNE
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|publish_date = 13 February 2016
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|publish_date = 13 March 2023
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|description = The Earth's ionosphere reacts strongly to the occurrence of flares and CMEs
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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 = Icon267.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 = Hard X-ray Directivity Measurements with STIX and MiSolFA‎
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|title =   The Curious First Sunquake of Solar Cycle 25‎
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|number = 266
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|number = 444
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|first_author = Diego Casadei
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|first_author = Alexander KOSOVICHEV
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|second_author = and Hugh Hudson
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|publish_date = 13 February 2023
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|publish_date = 7 December 2015
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|description = A double whammy: two distinct sunquakes from SOL2022-05-10.
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|description = Precise stereoscopic observations of hard X-rays can reveal electron beams
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|image=Icon444.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 =   Hard X-ray Pulsations via Gaussian Decomposition
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|number = 265
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|number = 443
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|first_author = Matej Kuhar
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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 = 19 November 2015
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|description = Flare hard X-ray time variations decomposed objectively
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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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|image=Icon443.png}}
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|image = Icon265.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 =   A possible coronal magnetic flare precursor
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|number = 264
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|number = 442
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|first_author = Eduard Kontar,
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|first_author = Enrico LANDI
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|second_author = Gordon Emslie, Natasha Jeffrey, and Nic Bian
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|publish_date = 16 January 2023
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|publish_date = 9 November 2015
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|description = Novel measurements of the coronal magnetic field may help with flare prediction
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|description = Incorporation of energy diffusion for electron transport helps with flare energetics
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|image=Icon442.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 =   A slow HOPE with microwave context
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|number = 263
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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 = 20 October 2015
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|description = A new microwave facility at Chashan Observatory, and a prototypical HOPE
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|description = Behavior of the X-ray Sun at low activity levels
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|image=Icon441.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 =   Rapid variations of Si IV spectra in a flare observed by IRIS at a sub-second cadence
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|number = 262
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|number = 440
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|first_author = Brian Dennis
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|first_author = Juraj L&Ouml;RIN&#268;&Iacute;K
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|second_author = and Kim Tolbert
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|publish_date = 14 November 2022
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|publish_date = 21 September 2015
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|description = Transition-region lines in a flare have a Doppler component revealing quasi-periodic pulsations
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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=Icon440.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 =   A Significant Sudden Ionospheric Disturbance Associated with a Massive Gamma-ray Burst
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|number = 261
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|number = 439
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|first_author = Maria Kazachenko
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|first_author = Laura HAYES and Peter GALLAGHER
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|second_author =
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|publish_date = 31 October 2022
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|publish_date = 14 September 2015
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|description = A first SID observed in broad daylight, from a source far far away
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|description = Flares need magnetic energy. We can now measure its arrival as Poynting flux across the solar photosphere.
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|image=Icon439.png}}
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|image = Icon261.png}}
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|title = RHESSI and General Relativity
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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 = 260
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|number = 438
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|first_author = Bill Thompson
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|first_author = Huidong HU, Ying D. LIU, and Bei ZHU
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|second_author = and Hugh Hudson
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|publish_date = 17 October 2022
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|publish_date = 7 September 2015
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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 = General-relativistic corrections to RHESSI source positions
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|image=Icon438.png}}
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|image = Icon260.png}}
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|title = Return-current Model Spectra and Enhanced Plasma Resistivity
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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 = 259
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|number = 437
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|first_author = Meriem Alaoui
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|first_author = Alexandra LYSENKO
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|second_author = and Gordon Holman
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|publish_date = 26 September 2022
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|publish_date = 31 August 2015
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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 = A basic return-current model matches RHESSI hard X-ray spectra and implies a need for anomalous resistivity
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|image=Icon437.png}}
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|image = Icon259.png}}
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|title = High Energies in the Inner Heliosphere
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|title =   First Detection of Kink Oscillations with Solar Orbiter
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|number = 258
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|number = 436
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|first_author = Hugh Hudson
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|first_author = Sihui ZHONG et al.
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|second_author =
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|publish_date = 19 September 2022
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|publish_date = 24 August 2015
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|description = SolO sees coronal oscillations as well as AIA can, and even better
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|description = Cosmic rays measure the coronal magnetic field at the PFSS source surface itself
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|image=Icon436.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 =   Energetic Neutral Hydrogen from Large Solar Flares
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|number = 257
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|number = 435
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|first_author = Xin CHENG
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|first_author = Glenn MASON
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|second_author =
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|publish_date = 6 September 2022
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|publish_date = 13 July 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 = The ONSET facility in Yunnan observes an interesting flare event
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|image=Icon435.png}}
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|image = Icon257.png}}
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|title = The Fastest Flare
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|title =   Fifty-year Anniversary of the First Detection of Gamma rays from a Solar Flare
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|number = 256
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|number = 434
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|first_author = Hugh Hudson
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|first_author = Jim Ryan,
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|second_author = and Paulo Sim&otilde;es
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|second_author = Brian Dennis, and Phil Dunphy
-
|publish_date = 29 June 2015
+
|publish_date = 8 August 2022
-
|description = A GOES soft X-ray burst lasting less than one minute - with hard X-rays and white-light continuum
+
|description = The rich astrophysics of gamma-ray astronomy began with solar observations fifty years ago
-
|image = Icon256.png}}
+
|image=Icon434.png}}
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|title = High-energy Electrons and Electric Currents during a Flare
+
|title =   Fast Prograde Flows in Solar Active Regions
-
|number = 255
+
|number = 433
-
|first_author = Sophie Musset,
+
|first_author = Hugh HUDSON
-
|second_author = Nicole Vilmer and V&eacute;ronique Bommier
+
|publish_date = 25 July 2022
-
|publish_date = 22 June 2015
+
|description = Unexpected, unpredicted, and not modeled yet - weird flows in hot active-region loops
-
|description = Photospheric vertical currents linked to sites of electron acceleration in the corona
+
|image=Icon433.png}}
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|image = Icon255.png}}
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|title = High Dispersion Spectroscopy of solar-type superflare stars
+
|title =   Undetected Minority-polarity Flux, Moss, and Coronal Heating
-
|number = 254
+
|number = 432
-
|first_author = Yuta Notsu
+
|first_author = Yi-Ming WANG
-
|second_author =
+
|publish_date = 11 July 2022
-
|publish_date = 8 June 2015
+
|description = There's plenty of room in "unipolar" active regions for both polarities, and there is good evidence for them
-
|description = Researching the properties of Kepler's solar-type superflare stars
+
|image=Icon432.png}}
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|image = Icon254.png}}
+
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|title = "Superflares" on solar-type stars observed with Kepler
+
|title =   Thermal/Nonthermal with MinXSS and RHESSI
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|number = 253
+
|number = 431
-
|first_author = Hiroyuki Maehara
+
|first_author = Shunsaku NAGASAWA
-
|second_author =
+
|publish_date = 13 June 2022
-
|publish_date = 1 June 2015
+
|description = Time-domain studies of improved X-ray spectra reveal a "super-hot' component
-
|description = Flare energies 10-1000 times those of the most powerful solar flares
+
|image=Icon431.png}}
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|image = Icon253.png}}
+
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|title = EOVSA Coverage of a Recent Gamma-Ray Flare
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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 = 252
+
|number = 430
-
|first_author = Dale Gary
+
|first_author = Yu XU
-
|second_author = and Gregory Fleishman
+
|second_author = and Hui TIAN
-
|publish_date = 11 May 2015
+
|publish_date = 30 May 2022
-
|description = A recent gamma-ray flare observed with Owens Valley microwave imaging spectroscopy
+
|description = The observation of the full 3d velocity of a CME, for an anniversary event
-
|image = Icon252.png}}
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|image=Icon430.png}}
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|title = Ionospheric Effects, Flare History, and Dick Donnelly
+
|title =   Carl Størmer
-
|number = 251
+
|number = 429
-
|first_author = Hugh Hudson
+
|first_author = Hugh HUDSON
-
|second_author = and Peter Gallagher
+
|second_author = and Lyndsay FLETCHER
-
|publish_date = 27 April 2015
+
|publish_date = 15 April 2022
-
|description = Recognizing the world’s largest X-ray detector, its ionosphere
+
|description = Størmer and the theory of trapping in loops
-
|image = 251f3.png}}
+
|image=Icon429.png}}
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|title = RHESSI Detection of X-ray Emission from a Quiet-Sun Filament Eruption
+
|title =   Solar Hard X-rays with Insight
-
|number = 250
+
|number = 428
-
|first_author =Gordon Holman
+
|first_author = Wei WANG
-
|second_author = and Adi Foord
+
|second_author = and Ping ZHANG
-
|publish_date = 13 April 2015
+
|publish_date = 21 March 2022
-
|description = A RHESSI X-ray flare is detected outside an active region
+
|description = A spectacular limb flare introduces Insight/HXMT, a new observational resource
-
|image = Icon250.png}}
+
|image=Icon428.png}}
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|title = Soft X-ray emission in kink-unstable coronal loops‎
+
|title =   Probing chromospheric current sheets using SST and ALMA co-observations
-
|number = 249
+
|number = 427
-
|first_author = Rui Pinto,
+
|first_author = Jo&atilde;o da SILVA SANTOS
-
|second_author = Nicole Vilmer, and Sacha Brun
+
|publish_date = 21 February 2022
-
|publish_date = 30 March 2015
+
|description = Emerging magnetic flux appears in ALMA images reflecting coronal current sheets
-
|description = Kinking flux ropes can create flare emission, but their detection may be deceptive
+
|image=Icon427.png}}
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|image = Icon249.png}}
+
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|title = Daily solar mm-observations at Aalto University Metsähovi Radio Observatory
+
|title =   A demonstration of STIX hard X-ray imaging spectroscopy capabilities for an X-class flare (SOL2021-10-28)
-
|number = 248
+
|number = 426
-
|first_author = Juha Kallunki
+
|first_author = Andrea BATTAGLIA, Hannah COLLIER,
-
|second_author = and Minttu Uunila
+
|second_author = and S&auml;m KRUCKER
-
|publish_date = 16 March 2015
+
|publish_date = 7 February 2022
-
|description = Systematic microwave and mm-wave solar observations from Finland
+
|description = STIX imaging of an X-class flare marks its success
-
|image = Icon248.png}}
+
|image=Icon426.png}}
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|title = Solar Physics during the March 2015 Solar Eclipse‎
+
|title =   A solar flare driven by thermal conduction observed in mid-infrared
-
|number = 247
+
|number = 425
-
|first_author = Hamish Reid
+
|first_author = Guillermo GIM&Eacute;NEZ de CASTRO
-
|second_author = and Hugh Hudson
+
|publish_date = 24 January 2022
-
|publish_date = 9 March 2015
+
|description = Strong 10-micron emission from a GOES C2 flare suggests conductive heating
-
|description = A total solar eclipse is coming on 2015 March 20, a good opportunity for many observatories
+
|image=Icon425.png}}
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|image = Icon247.png}}
+
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|title = Glasgow Callisto and CMEless type II bursts
+
|title =   Disk Occultation of a Lopsided Sun‎
-
|number = 246
+
|number = 424
-
|first_author = Peter Wakeford
+
|first_author = Hugh HUDSON,
-
|second_author = and Hugh Hudson
+
|second_author = Stephen WHITE and S&auml;m KRUCKER
-
|publish_date = 16 February 2015
+
|publish_date = 10 January 2022
-
|description = The Glasgow Callisto telescope observes rare type II bursts without CME drivers
+
|description = Observing a spotless Sun can enable observations of the faint corona.
-
|image = Icon246.png}}
+
|image=Icon424.png}}
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|title = Flare Heating by Mildly Non-thermal Particles
+
|title =   Resolving two distinct thermal X-ray components in a compound solar flare
-
|number = 245
+
|number = 423
-
|first_author = Jeffrey Reep
+
|first_author = Zhenjun ZHOU
-
|second_author =  
+
|second_author = and Rui LIU
-
|publish_date = 26 January 2015
+
|publish_date = 28 December 2021
-
|description = Sorting out nonthermal distributions via HYDRAD models
+
|description = Superhot coronal sources may be independent loop systems
-
|image = Icon245.png}}
+
|image=Icon423.png}}
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|title = Above-the-Looptop Sources
+
|title =   Bridging solar flares to coronal mass ejections
-
|number = 244
+
|number = 422
-
|first_author = Mitsuo Oka
+
|first_author = Markus ASCHWANDEN
-
|second_author = and Säm Krucker
+
|publish_date = 14 December 2021
-
|publish_date = 12 January 2015
+
|description = The Neupert effect allows us to trace coronal mass ejections seamlessly
-
|description = Electron distribution functions in coronal sources
+
|image=Icon422.png}}
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|image = Icon244.png}}
+
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|title = The IAU Solar Target Identifier - A Good Thing
+
|title =   The Jakimiec Diagnostic Diagram
-
|number = 243
+
|number = 421
-
|first_author = Hugh Hudson
+
|first_author = Hugh HUDSON
-
|second_author = and John Leibacher
+
|publish_date = 29 November 2021
-
|publish_date = 29 December 2014
+
|description = The joint variation of GOES temperature and emission measure discloses new features via an old tool
-
|description = Standardized names for flares help a lot
+
|image=Icon421.png}}
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|image = Icon243.png}}
+
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|title = The Low-High-Low Starting Frequency Trend in Groups of Type III Bursts
+
|title =   First look at ALMA/HInode/IRIS microflares
-
|number = 242
+
|number = 420
-
|first_author = Hamish Reid
+
|first_author = Toshifumi SHIMIZU
-
|second_author =  
+
|second_author = et al.
-
|publish_date = 23 December 2014
+
|publish_date = 8 November 2021
-
|description = The type III radio bursts echo the pattern of flare energy release
+
|description = High-resolution ALMA and multiwavelength observations of microflaring
-
|image = Icon242.png}}
+
|image=Icon420.png}}
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|title = The Solar X-ray Limb II
+
|title =   Thomson scattering near sunspots
-
|number = 241
+
|number = 419
-
|first_author = Marina Battaglia
+
|first_author = Pascal Saint-Hilaire
-
|second_author = and Hugh Hudson
+
|second_author = et al.
-
|publish_date = 24 November 2014
+
|publish_date = 25 October 2021
-
|description = X-raying the mass distribution at the limb of the Sun: the true solar radius
+
|description = Completing the modeling of low-coronal Thomson polarimetry
-
|image = Icon241.png}}
+
|image=Icon419.png}}
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|title = Back from the Far Side
+
|title =   A Non-PFSS Global Coronal Model
-
|number = 240
+
|number = 418
-
|first_author = Hugh Hudson
+
|first_author = Oliver RICE
-
|second_author = and Greg Slater
+
|second_author = and Anthony YEATES
-
|publish_date = 17 November 2014
+
|publish_date = 11 October 2021
-
|description = Active region 2192 has returned as 2209, still no CMEs
+
|description = Modeling as convenient as PFSS but much more realistic
-
|image = Icon240.png}}
+
|image=Icon418.png}}
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|title = A Record-Setting CMEless Flare
+
|title =   Manifold Nonthermality
-
|number = 239
+
|number = 417
-
|first_author = Sam Freeland
+
|first_author = Marina BATTAGLIA
-
|second_author = and Greg Slater
+
|second_author = et al.
-
|publish_date = 27 October 2014
+
|publish_date = 27 September 2021
-
|description = Active region 2192 produced many huge flares, but no CMEs
+
|description = Even weak flares involve multiple sites of non thermal activity
-
|image = Icon239.png}}
+
|image=Icon417.png}}
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|title = The Formation of Kappa Distributions in Solar Flares
+
|title =   X-Rays from a Type I Radio Burst
-
|number = 238
+
|number = 416
-
|first_author = Nicolas Bian
+
|first_author = R.  RAMESH
-
|second_author = and Duncan Stackhouse
+
|publish_date = 20 September 2021
-
|publish_date = 13 October 2014
+
|description = A first identification of type I radio emission with hot plasma
-
|description = Kappa distributions may form naturally in certain flare environments
+
|image=Icon416.png}}
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|image = Icon238.png}}
+
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|title = The Balmer continuum observed from IRIS!
+
|title =   Do Hot Onsets Predict Flare Magnitudes?
-
|number = 237
+
|number = 415
-
|first_author = Petr Heinzel
+
|first_author = Hugh HUDSON
-
|second_author = and Lucia Kleint
+
|publish_date = 30 August 2021
-
|publish_date = 29 September 2014
+
|description = Maybe we can tell how big a flare is going to be from its initial development...
-
|description = For the first time we have clear and direct observations of the Balmer continuum, from space
+
|image=Icon415.png}}
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|image = Icon237.png}}
+
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|title = Energy goes up... but doesn't come back down! Coronal heating?
+
|title =   Confined or Eruptive?
-
|number = 236
+
|number = 414
-
|first_author = Brian Welsch
+
|first_author = Ting LI et al.
-
|second_author =
+
|publish_date = 16 August 2021
-
|publish_date = 22 September 2014
+
|description = Increased magnetic flux reduces CME eruptivity
-
|description = The Poynting flux responsible for coronal heating may have been spotted
+
|image=Icon414.png}}
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|image = Icon236.png}}
+
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|title = Which detectors can I use to analyze this flare?
+
|title =   Impulsive and Gradual Eruptive Gamma Flares and Associated CMEs
-
|number = 235
+
|number = 413
-
|first_author = Brian Dennis
+
|first_author = Alexey STRUMINSKY,
-
|second_author = and Kim Tolbert
+
|second_author = Irina GRIGORIEVA and Andrei SADOVSKI
-
|publish_date = 15 September 2014
+
|publish_date = 19 July 2021
-
|description = A new Browser feature helps to answer this question
+
|description = Extreme behavior of flare/CME events explained by environment
-
|image = Icon235.png}}
+
|image=Icon373.png}}
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|title = RHESSI Resumes Observations
+
|title =   The Morphology of Flare Time Profiles
-
|number = 234
+
|number = 412
-
|first_author = Albert Shih
+
|first_author = Larisa KASHAPOVA
-
|second_author = and S&auml;m Krucker
+
|second_author = et al.
-
|publish_date = 1 September 2014
+
|publish_date = 12 July 2021
-
|description = Back to normal, the anneal was a success
+
|description = Systematic comparison of solar and stellar flaring time profiles
-
|image = Icon234.png}}
+
|image=Icon412.png}}
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|title = EUNIS Sees Pervasive Faint Fe XIX Emission: Evidence for Nanoflare Heating
+
|title =   Flare Pulsation and the Heliosphere
-
|number = 233
+
|number = 411
-
|first_author = Jeff Brosius
+
|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 = 18 August 2014
+
|publish_date = 14 June 2021
-
|description = Faint emission at flare-like temperatures in a large coronal area
+
|description = Evidence for non-equilibrium ionization in the current sheet of SOL2017-09-10
-
|image = Icon233.png}}
+
|image=Icon409.png}}
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|title = Octupolar out-of-plane magnetic field structure generation during magnetic reconnection
+
|title =   Effects of Flares on Solar p-modes
-
|number = 232
+
|number = 408
-
|first_author = Jan Graf von der Pahlen
+
|first_author = Maria-Cristina RABELLO SOARES
-
|second_author = and David Tsiklauri
+
|second_author = and Frederic BAUDIN
-
|publish_date = 11 August 2014
+
|publish_date = 26 April 2021
-
|description = A new characteristic marker of reconnection
+
|description = No detectable p-mode amplitude changes due to solar flares
-
|image = Icon232.png}}
+
|image=Icon408.png}}
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|title = Flare Observed by a Dozen Instruments
+
|title =   Subsecond Spikes in Solar Flare X-ray Flux as Seen by Fermi GBM
-
|number = 231
+
|number = 407
-
|first_author = Lucia Kleint
+
|first_author =Trevor KNUTH
-
|second_author = and Kevin Reardon
+
|second_author = and Lindsay GLESENER
-
|publish_date = 28 July 2014
+
|publish_date = 19 April 2021
-
|description = A wonderful flare observed by a grand set of instruments, including IRIS and IBIS
+
|description = A new analysis technique pushes hard X-ray time scales to 0.1 sec or faster
-
|image = Icon231.png}}
+
|image=Icon407.png}}
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|title = The Redistribution of Nonthermal Electron Energy
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|title = Negative He 10830 Flare Ribbons and Non-thermal Electrons
-
|number = 230
+
|number = 406
-
|first_author = Ryan Milligan
+
|first_author = Graham KERR
|second_author =  
|second_author =  
-
|publish_date = 14 July 2014
+
|publish_date = 12 April 2021
-
|description = Describing what we know about the dominant energy driving a solar flare
+
|description = A 1D radiation hydrodynamics model can explain the dark leading edges of He I flare ribbons
-
|image = Icon230.png}}
+
|image=Icon406.png}}
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|title = RHESSI is Annealing Now
+
|title = Tracing the sources of gradual solar energetic particle events
-
|number = 229
+
|number = 405
-
|first_author = Albert Shih
+
|first_author = David H. BROOKS
-
|second_author = and Martin Fivian
+
|second_author = and Stephanie L. YARDLEY
-
|publish_date = 7 July2014
+
|publish_date = 29 March 2021
-
|description = A fourth repair job for RHESSI, smoothing out radiation damage
+
|description = Chemical abundances in SEPs suggest an origin in flare-related moss regions
-
|image = Icon229.png}}
+
|image=Icon405.png}}
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|title = Mysteries of Flare/CME Initiation
+
|title = The Superflare SOL2017-09-06: from submm to mid-IR
-
|number = 228
+
|number = 404
-
|first_author = Shaun Bloomfield
+
|first_author = Guillermo (Guigue) GIM&Eacute;NEZ DE CASTRO
-
|second_author = and Hugh Hudson
+
|second_author =  
-
|publish_date = 8 June 2014
+
|publish_date = 15 March 2021
-
|description = Pairs of flares
+
|description = Glimpsing the "missing decades" of the flare emission spectrum
-
|image = Icon228.png}}
+
|image=Icon404.png}}
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|title = Solar Cosmic Rays, Neutrons, and Fermi Gamma-Rays
+
|title = The Neupert Effect Revisited
-
|number = 227
+
|number = 403
-
|first_author = Hugh Hudson
+
|first_author = Jiong QIU
-
|second_author = and Alec MacKinnon
+
|second_author =  
-
|publish_date = 24 May 2014
+
|publish_date = 8 March 2021
-
|description = Exciting new solar high-energy observations
+
|description = Two time scales for heating individual flare strands
-
|image = Icon227.png}}
+
|image=Icon403.png}}
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|title = The 3D standard model for eruptive flares‎
+
|title = FLUKA as a tool for interpreting flare gamma-rays
-
|number = 226
+
|number = 402
-
|first_author = Miho Janvier
+
|first_author = Alec MACKINNON
|second_author =  
|second_author =  
-
|publish_date = 10 May 2014
+
|publish_date = 1 March 2021
-
|description = Torus instability and slipping reconnection
+
|description = The nuclear physics of solar flares captured in a detailed model
-
|image = Icon226.png}}
+
|image=Icon402.png}}
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|title = Microwave Images of a Single-Loop Flare: Observations and Simulations
+
|title = A Collective Study of 11 NuSTAR Microflares
-
|number = 225
+
|number = 401
-
|first_author = Alexey Kuznetsov
+
|first_author = Jessie DUNCAN and
-
|second_author = and Eduard Kontar
+
|second_author = Lindsay GLESENER
-
|publish_date = 28 April 2014
+
|publish_date =  22 February 2021
-
|description = A flare analysis making use of the new GX Simulator modeling software
+
|description =  Swarms of NuSTAR micro flares
-
|image = Icon225.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 =Abundances in Solar Flares
+
|title = Richard Schwartz
-
|number = 224
+
|number = 399
-
|first_author = Harry Warren
+
|first_author = Brian DENNIS and
-
|second_author =  
+
|second_author = Hugh HUDSON
-
|publish_date = 21 April 2014
+
|publish_date = 25 January 2021
-
|description = Wrinkles in the FIP effect for flares
+
|description = Remembering a friend and colleague
-
|image = Icon224.png}}
+
|image=Icon399.jpg}}
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|title =Homing in on Flare Energy
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|title = Observing Solar Flare X-ray Polarization with Prospective CubeSat Missions
-
|number = 223
+
|number = 398
-
|first_author = Hugh Hudson
+
|first_author = Natasha JEFFREY
-
|second_author = and Ryan Milligan
+
|publish_date = 4 January 2021
-
|publish_date = 14 April 2014
+
|description = The polarization of the solar X-ray spectrum generally remains to be observed
-
|description = Representing the spectral energy distribution of a flare
+
|image=Icon398.png}}
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|image = Icon223.png}}
+
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|title =Empirical Constructs and Cartoons
+
|title = Solar effects in the local interstellar medium
-
|number = 222
+
|number = 397
-
|first_author = Forrest Mozer
+
|first_author = Don GURNETT and
-
|second_author = and Hugh Hudson
+
|second_author = Hugh HUDSON
-
|publish_date = 24 March 2014
+
|publish_date = 14 December 2020
-
|description = How our mental images may relate to what's really going on
+
|description = Relativistic particle events observed _in situ_ in the interstellar medium
-
|image = Icon222.png}}
+
|image=Icon397.png}}
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|title = Imaging Quasi-Periodic Oscillations in a Simple Flare‎
+
|title = Investigation of Small-Scale Energy Releases in Hard X-rays with ​FOXSI
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|number = 221
+
|number = 396
-
|first_author = Zongjun Ning
+
|first_author = Subramania ATHIRAY and
-
|second_author = and Hugh Hudson
+
|second_author = Juliana VIEVERING
-
|publish_date = 17 March 2014
+
|publish_date = 7 December 2020
-
|description = Time-series imaging spectroscopy in a B8 flare
+
|description = Hard X-rays and high temperatures from the feeblest microflares
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|image = Icon221.png}}
+
|image=Icon396.png}}
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|title = A Wonderful Cycle 24 Flare
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|title = What drives impulsive coronal heating?
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|number = 220
+
|number = 395
-
|first_author = S&auml;m Krucker
+
|first_author = Pradeep CHITTA
-
|second_author = and Hugh Hudson
+
|second_author = et al.
-
|publish_date = 3 March 2014
+
|publish_date = 30 November 2020
-
|description = There have been quite a few Cycle 24 X-class flares, and this was one of the nicest
+
|description = Impulsive footpoint emissions suggest magnetic reconnection in the chromosphere
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|image = Icon220.png}}
+
|image=Icon395.png}}
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|title = Instantaneous Flare Properties
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|title = Probing the solar coronal heating function with slow magnetoacoustic waves
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|number = 218
+
|number = 394
-
|first_author = Hugh Hudson
+
|first_author = Dmitrii KOLOTKOV
-
|second_author =  
+
|second_author = et al.
-
|publish_date = 10 February 2014
+
|publish_date = 16 November 2020
-
|description = Let's look at the derivative
+
|description = Coronal heating models meet damped slow magnetoacoustic waves
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|image = Icon218.png}}
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|image=Icon394.png}}
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|title = Reflection of Coronal Global Waves
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|title = Self-Consistent Flare Model
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|number = 217
+
|number = 393
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|first_author = Ines Kienreich
+
|first_author = Wenzhi RUAN
-
|second_author = and Hugh Hudson
+
|second_author = and Rony KEPPENS
-
|publish_date = 13 January 2014
+
|publish_date = 2 November 2020
-
|description = A homologous series of global coronal waves reflects at a coronal-hole boundary
+
|description = Energy transport by fast particles made self-consistent with MHD flare modeling
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|image = Icon217.png}}
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|image=Icon393.png}}
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|title = Flare Coronal Rain
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|title = Hot Flare Onsets
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|number = 216
+
|number = 392
-
|first_author = Hugh Hudson
+
|first_author = Hugh HUDSON
-
|second_author = and S&auml;m Krucker
+
|second_author = et al.
-
|publish_date = 23 December 2013
+
|publish_date = 26 October 2020
-
|description = Thermal collapse in flare loops seen in a wonderful new way
+
|description = The initial soft X-ray temperatures of solar flares tend to be in the 10-15 MK range
-
|image = Icon216.png}}
+
|image=Icon392.png}}
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|title = The HEROES Mission: High Energy Replicated Optics to Explore the Sun
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|title = Electric Current Neutralization and Eruption
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|number = 215
+
|number = 391
-
|first_author = Steven Christe
+
|first_author = Ellis AVALLONE
-
|second_author = and Albert Shih
+
|second_author = and Xudong SUN
-
|publish_date = 16 December 2013
+
|publish_date = 19 October 2020
-
|description = Focusing optics to explore the high-energy Sun
+
|description = Coronal currents without neutralizing return currents appear to  
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|image = Icon215.png}}
+
|image=Icon391.png}}
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|title = CMEs on young, solar-type stars
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|title = Prediction of Solar Cycle 25
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|number = 214
+
|number = 390
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|first_author = Alicia Aarnio
+
|first_author = Leif SVALGAARD
|second_author =  
|second_author =  
-
|publish_date = 9 December 2013
+
|publish_date = 5 October 2020
-
|description = Stellar flares and CMEs behave like solar ones
+
|description = Now we know how big the next solar maximum will be
-
|image = Icon214.png}}
+
|image=Icon390.png}}
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|title = The 1859 Space Weather Event Revisited
+
|title =   Flare/CME Cartoon Archive
-
|number = 213
+
|number = 389
-
|first_author = Ed Cliver
+
|first_author = Hugh HUDSON
|second_author =  
|second_author =  
-
|publish_date = 25 November 2013
+
|publish_date = 27 September 2020
-
|description = Assessing the greatest space-weather events over the centuries
+
|description = A new edition of the Flare/CME archive, nearly a half kilotoon now
-
|image = Icon213.png}}
+
|image=Icon389.png}}
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|title = Hard X-ray Footpoint Asymmetry
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|title =   Submerged Flare Acoustic Sources
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|number = 212
+
|number = 388
-
|first_author = Ya-Hui YANG
+
|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 = 7 November 2013
+
|publish_date = 31 August 2020
-
|description = The behavior of conjugacy in flare footpoints
+
|description = Breakout reconnection reveals itself via microwave polarization measurements.
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|image = Icon212.png}}
+
|image=Icon387.png}}
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|title = The Halloween Flares and Large-Scale Correlations
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|title =   Relation of Non-neutralized electric currents and the activity in active regions
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|number = 211
+
|number = 386
-
|first_author = Richard Schwartz
+
|first_author = P. VEMAREDDY
-
|second_author = and Hugh Hudson
+
|second_author =  
-
|publish_date = 28 October 2013
+
|publish_date = 24 August 2020
-
|description = Flares bunch up strikingly
+
|description = Non-neutralized coronal current systems contribute to CME eruptions
-
|image = Icon211.png}}
+
|image=Icon386.png}}
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|title = Scattering Polarization in Solar Flares
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|title =   White-light emission and photospheric magnetic field changes in flares
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|number = 210
+
|number = 385
-
|first_author = Ji&#345;i &#352;t&#283;p&aacute;n
+
|first_author = J. Sebasti&aacute;n CASTELLANOS DUR&Aacute;N
-
|second_author = and Petr Heinzel
+
|second_author = and Lucia KLEINT
-
|publish_date = 21 October 2013
+
|publish_date = 17 August 2020
-
|description = Linear polarization produced by anisotropy, rather than particle-beam impact
+
|description = There are strong correlations between white-light flare emissions and line-of-sight magnetic field changes
-
|image = Icon210.png}}
+
|image=Icon385.png}}
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|title = The Flare that Time Forgot
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|title =   Sunspot Differential Rotation in an X-class Flare
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|number = 209
+
|number = 384
-
|first_author = Paulo Sim&ouml;es
+
|first_author = Richard GRIMES,
-
|second_author = and Hugh Hudson
+
|second_author = Bal&aacute;zs PINT&Eacute;R and Huw MORGAN
-
|publish_date = 13 October 2013
+
|publish_date = 10 August 2020
-
|description = A long-forgotten Masuda flare reappears
+
|description = Observations suggesting how the coronal tail can wag the photospheric dog
-
|image = Icon209.png}}
+
|image=Icon384.png}}
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|title = The Post-Burst Increase
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|title =   Energy Partitioning in a Nonthermally Dominated Two-loop Solar Flare
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|number = 208
+
|number = 383
-
|first_author = Hugh Hudson
+
|first_author = Galina MOTORINA
-
|second_author =  
+
|second_author = et al.
-
|publish_date = 30 September 2013
+
|publish_date = 3 August 2020
-
|description = Tutorial on flare thermal sources seen in microwaves
+
|description = Modeling the propagation of energy via GX Simulator in an early-impulsive flare
-
|image = Icon208.png}}
+
|image=Icon383.png}}
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|title = Peristaltic Shocks: a model
+
|title =   SOL2013-11-10 Eruptive Circular-ribbon Flare with Extended Remote Brightenings
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|number = 207
+
|number = 382
-
|first_author = Dana Longcope
+
|first_author = Chang LIU
-
|second_author = and Roger Scott
+
|second_author = et al.
-
|publish_date = 16 September 2013
+
|publish_date = 31 July 2020
-
|description = Reconciling reconnection with high preflare coronal densities
+
|description = A circular-ribbon event can launch an eruption by breaking through its separatrix dome
-
|image = Icon207.png}}
+
|image=Icon382.png}}
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|title = Negative Microwave Bursts
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|title =   Extreme-Ultraviolet Late Phase of Solar Flares
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|number = 206
+
|number = 381
-
|first_author = Victor Grechnev
+
|first_author = Rui LIU
-
|second_author = and Hugh Hudson
+
|second_author =
-
|publish_date = 3 September 2013
+
|publish_date = 22 June 2020
-
|description = Negative microwave bursts happen, in association with flares and "Hyder flares," and modern instrumentation makes them very interesting again
+
|description = Both arcade and circular-ribbon flares may sometimes spawn EUV late phase emission
-
|image = Icon206.png}}
+
|image=Icon381.png}}
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|title = Acceleration-region Densities
+
|title =   Energy transport by accelerated particles in the quiet solar atmosphere
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|number = 205
+
|number = 380
-
|first_author = S&auml;m Krucker
+
|first_author = Lars FROGNER,
-
|second_author = and Marina Battaglia
+
|second_author = Boris GUDIKSEN and Helle BAKKE
-
|publish_date = 6 August 2013
+
|publish_date = 15 June 2020
-
|description = Independent constraints on the densities of ions and non-thermal electrons reveal bulk acceleration
+
|description = A first study of non-thermal particles integrated into an MHD simulation of the solar atmosphere
-
|image = Icon205.png}}
+
|image=Icon380.png}}
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|title = Implosion and Oscillation
+
|title =   Quasi-periodic pulsations as indicators of oscillatory processes in solar flares
-
|number = 204
+
|number = 379
-
|first_author = Paulo Sim&otilde;es
+
|first_author = Elena KUPRIYANOVA
-
|second_author = and Hugh Hudson
+
|second_author = et al.
-
|publish_date = 29 July 2013
+
|publish_date = 11 May 2020
-
|description = The flare implosion originates in the lower atmosphere and involves GOES soft X-rays
+
|description = Many, many QPPs
-
|image = Icon204.png}}
+
|image=Icon379.png}}
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|title = Minoflares
+
|title =   Rejuvenating Solar Flare Termination Shocks as Particle Accelerators
-
|number = 203
+
|number = 378
-
|first_author = Iain Hannah
+
|first_author = Bin CHEN
-
|second_author = and Hugh Hudson
+
|second_author =  
-
|publish_date = 1 July 2013
+
|publish_date = 4 May 2020
-
|description = Earmarks of widespread energetic events in the solar atmosphere
+
|description = At  last, clear evidence for a long-predicted phenomenon
-
|image = Icon203.png}}
+
|image=Icon378.png}}
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|title = Mars Odyssey/HEND and RHESSI
+
|title =   Broad symmetrical Doppler-shifted Fe XXI line profiles
-
|number = 202
+
|number = 377
-
|first_author = Vadim Vybornov
+
|first_author = Vanessa POLITO
-
|second_author = and Michael A. Livshits
+
|second_author =  
-
|publish_date = 9 June 2013
+
|publish_date = 20 April 2020
-
|description = An event from far behind the solar limb, observed at Mars
+
|description = It is difficult to explain "evaporation" line profiles by superposition of unresolved flows
-
|image = Icon202.png}}
+
|image=Icon377.png}}
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|title = Hard X-rays in Descent
+
|title =   Phenomena in the unusually long pre-impulsive phase of SOL2011-06-07
-
|number = 201
+
|number = 376
-
|first_author = Aidan O'Flannagain,
+
|first_author = Marian KARLICK&Yacute;,
-
|second_author = John Brown and Peter Gallagher
+
|second_author = Jana KA&Scaron;PAROV&Aacute;, and Robert SYCH
-
|publish_date = 27 May 2013
+
|publish_date = 13 April 2020
-
|description = A novel test of the thick-target model
+
|description = A massive and slowly-rising filament eruption reveals important new signatures of the physics
-
|image = Icon200.png}}
+
|image=Icon376.png}}
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|title = Too few? Too many?
+
|title =   Evidence for a Coronal Shock Wave Origin for Relativistic Protons Producing Solar Gamma-Rays and Observed by Neutron Monitors at Earth‎
-
|number = 200
+
|number = 375
-
|first_author = Paulo Simões
+
|first_author = Athanasios KOULOUMVAKOS
-
|second_author = and Eduard Kontar
+
|second_author = and Gerry SHARE
-
|publish_date = 13 May 2013
+
|publish_date = 6 April 2020
-
|description = Too few electrons in the footpoints; too many electrons in the corona
+
|description = Successful modeling of prolonged solar gamma-ray emissions and terrestrial ground-level cosmic-ray events
-
|image = Icon201.png}}
+
|image=Icon375.png}}
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|title = A huge gamma-ray burst
+
|title =   Using overlappogram data to find hot flare plasma
-
|number = 199
+
|number = 374
-
|first_author = David Smith
+
|first_author = Louise HARRA
-
|second_author = and Andr&eacute; Csillaghy
+
|  
-
|publish_date = 6 May 2013
+
|publish_date = 23 March 2020
-
|description = A wonderfully bright gamma-ray burst at Z = 0.34
+
|description = Imaging Fe XXIV at high resolution with the EIS slot data
-
|image = Icon199.png}}
+
|image=Icon374.png}}
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|title = Three-phase life leads to corpulent X-ray loops
+
|title =   SOL2017-09-04 (M5.5) 2017 as a Source of Relativistic Electrons and Protons
-
|number = 198
+
|number = 373
-
|first_author = Natasha Jeffrey
+
|first_author = Alexei STRUMINSKII
-
|second_author = and Eduard Kontar
+
| (see text)
-
|publish_date = 15 April 2013
+
|publish_date = 16 March 2020
-
|description = RHESSI observations explore structural changes in flaring loops
+
|description = Flare-accelerated particles, rather than SEPs, energize sustained gamma-ray emission
-
|image = Icon198.png}}
+
|image=Icon373.png}}
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|title = Antipodal Flares
+
|title =   Heating of the solar photosphere during a white-light flare‎
-
|number = 197
+
|number = 372
-
|first_author = B. Pecos
+
|first_author = Jan JURČÁK
-
|second_author = and B. Paul
+
| (see text)
-
|publish_date = 1 April 2013
+
|publish_date = 2 March 2020
-
|description = Flares on a solar diameter suggest a new subatomic particle
+
|description = The best-ever spectrum of the flare photosphere
-
|image = Icon197.png}}
+
|image=Icon372.png}}
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|title = Observational evidence for breakout reconnection
+
|title =   A Hot Cusp-Shaped Confined Solar Flare
-
|number = 196
+
|number = 371
-
|first_author =Henry Aurass
+
|first_author = Aaron HERNANDEZ-PEREZ
-
|second_author = and Gordon Holman
+
|publish_date = 24 February 2020
-
|publish_date = 18 March 2013
+
|description = A flare may have a prominent hot cusp with the help of any eruption
-
|description = Coronal particle acceleration marks the eruption of a SEE
+
|image=Icon371.png}}
-
|image = Icon196.png}}
+
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|title = Burst-on-Tail (BOT)
+
|title =   The Temporal and Spatial Extension of Gamma-ray Emission from the Sun
-
|number = 195
+
|number = 370
-
|first_author = Alex Struminsky
+
|first_author = Nat GOPALSWAMY
-
|second_author = and Ivan Zimovets
+
|publish_date = 17 February 2020
-
|publish_date = 4 March 2013
+
|description = Sustained solar &gamma;-rays and solar cosmic rays
-
|description = A "Burst-on-Tail" (BOT) phenomenon
+
|image=Icon370.ng.png}}
-
|image = Icon195.png}}
+
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|title = Electron re-acceleration and HXR emission
+
|title =   A PSP Perihelion
-
|number = 194
+
|number = 369
-
|first_author = Heather Ratcliffe
+
|first_author = Jessie DUNCAN
-
|second_author = and Marian Karlick&yacute;
+
|second_author = and Hugh Hudson
-
|publish_date =18 February 2013
+
|publish_date = 20 January 2020
-
|description = Can wave-particle interactions solve the electron number problem?
+
|description = The Parker Solar Probe enters its fourth perihelion already. Now
-
|image = Icon194.png}}
+
|image=Icon369.png}}
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|title = Passages of Electron Beams
+
|title =   Remembering John Brown
-
|number = 193
+
|number = 368
-
|first_author = Bin Chen
+
|first_author = Alec MacKINNON
-
|second_author = and Tim Bastian
+
|second_author =  
-
|publish_date =11 February 2013
+
|publish_date = 13 January 2020
-
|description = New VLA capability for imaging spectroscopy shows several remarkable features of type III bursts
+
|description = John passed away unexpectedly on 16 November 2019
-
|image = Icon193.png}}
+
|image=Icon368.png}}
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|title = Kappa Distribution
+
|title =   A Global Survey of EUV Coronal Power Spectra
-
|number = 192
+
|number = 367
-
|first_author = Mitsuo Oka
+
|first_author = Karl Battams
|second_author =  
|second_author =  
-
|publish_date =21 January 2013
+
|publish_date = 30 December 2019
-
|description = A simpler function fits both thermal and nonthermal RHESSI spectral ranges
+
|description = Time-series parameter maps of imaged power spectra from an AIA pipeline
-
|image = Icon192.jpg}}
+
|image=Icon367.png}}
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|title = Hard X-ray Spikes Observed by RHESSI
+
|title =   Cosmic Rays over the Rainbow Bridge
-
|number = 191
+
|number = 366
-
|first_author = Jiong Qiu
+
|first_author = Hugh Hudson
 +
|second_author = Alec MacKinnon
 +
|publish_date = 16 December 2019
 +
|description =  Cosmic rays approach the Sun
 +
|image=Icon366.png}}
 +
 
 +
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 +
|title =  Spectropolarimetric Insight into Plasma-Sheet Dynamics of a Solar Flare
 +
|number = 365
 +
|first_author = Ryan French
|second_author =  
|second_author =  
-
|publish_date =7 January 2013
+
|publish_date = 9 December 2019
-
|description = New software allows RHESSI to study rapid time variations
+
|description = CoMP polarization patterns in SOL2017-09-10 are amazing
-
|image = Icon191.png}}
+
|image=Icon365.png}}
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|title = Flare Productivity
+
|title =   Lorentz Force Evolution Reveals the Energy Build-up Processes during Recurrent Eruptive Solar Flares‎
-
|number = 190
+
|number = 364
 +
|first_author = Ranadeep Sarkar,
 +
|second_author = Nandita Srivastava and Astrid Veronig
 +
|publish_date = 18 November  2019
 +
|description =  The net Lorentz force clearly exhibits a build-up and release pattern
 +
|image=Icon364.png}}
 +
 
 +
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|title =  Flare waiting times depend on their magnitudes
 +
|number = 363
|first_author = Hugh Hudson
|first_author = Hugh Hudson
-
|second_author = and Lyndsay Fletcher
+
|second_author =  
-
|publish_date =27 December 2012
+
|publish_date = 11 November  2019
-
|description = An anomalous change in flare productivity per active region
+
|description = Surprising new evidence for the flare build-up and release process
-
|image = Icon190.png}}
+
|image=Icon363.png}}
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|title = FOXSI Success
+
|title =   Can magnetic reconnection cause solar rainstorms?‎
-
|number = 189
+
|number = 362
-
|first_author = Lindsay Glesener
+
|first_author = Petra Kohutova
-
|second_author = and S&auml;m Krucker
+
|second_author =  
-
|publish_date =27 December 2012
+
|publish_date = 4 November  2019
-
|description = The FOXSI rocket soars, and a flare occurs on schedule
+
|description = Impulsive coronal heating resulting from reconnection can trigger coronal rain
-
|image = Icon189.png}}
+
|image=Icon362.png}}
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|title = "Impulse Response Flares" and Gamma Rays
+
|title = Non-radial jets on the edges of active regions
-
|number = 188
+
|number = 361
-
|first_author = Stephen White
+
|first_author = Peter Wyper
-
|second_author = and Hugh Hudson
+
|second_author =  
-
|publish_date =13 November 2012
+
|publish_date = 14 October 2019
-
|description = A simplifying paradigm may describe acceleration to the highest energies in flares
+
|description = The very common jet structures we see can naturally combine twist and breakout
-
|image = Icon188.png}}
+
|image=Icon361.png}}
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|title = Glasgow Callisto optimistic: first light comes in focus
+
|title = Searching SOLfully within the Nuggets
-
|number = 187
+
|number = 360
-
|first_author = Heather Ratcliffe
+
|first_author = Hugh Hudson
-
|second_author = and Eduard Kontar
+
|second_author =  
-
|publish_date =29 October 2012
+
|publish_date = 7 October 2019
-
|description = The Glasgow Callisto radio observatory is on line
+
|description = The IAU target identifier works well for finding items about a particular event
-
|image = Icon187.png}}
+
|image=Icon360.png}}
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|title = Photospheric Temperature Gradient
+
|title = Submillimeter Radiation as the Thermal Component of the Neupert Effect
-
|number = 186
+
|number = 359
-
|first_author = Martin Fivian
+
|first_author = Guillermo Gim&eacute;nez de Castro
-
|second_author = and Hugh Hudson
+
|second_author =  
-
|publish_date =22 October 2012
+
|publish_date = 31 September 2019
-
|description = RHESSI observes the photosphere with exquisite precision
+
|description = Flare radiation at the highest frequencies can be bremsstrahlung
-
|image = Icon186.png}}
+
|image=Icon359.png}}
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|title = Energy Partition in Large Solar Eruptive Events
+
|title = The "Last Best" Flares
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|number = 185
+
|number = 358
-
|first_author = Gordon Emslie
+
|first_author = Hugh Hudson,
-
|second_author = and Brian Dennis
+
|second_author = Ed Cliver, and Brian Dennis
-
|publish_date =5 October 2012
+
|publish_date = 24 September 2019
-
|description = Where the flare energy comes from, and where it goes to.
+
|description = Major flares tend to happen at the very ends of sunspot cycles
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|image = Icon185.png}}
+
|image=Icon358.png}}
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|title = New TGFs Found in the RHESSI Data
+
|title = Dynamic Processes of the Moreton Wave on 2014 March 29‎
-
|number = 184
+
|number = 357
-
|first_author = Thomas Gjesteland
+
|first_author = Denis Cabezas
-
|second_author = and Nikolai &Oslash;stgaard
+
|second_author = and the FMT team
-
|publish_date =10 September 2012
+
|publish_date = 16 September 2019
-
|description = RHESSI sees many, many gamma-ray flashes from lightning
+
|description = A beautiful Moreton wave excited by the best-observed flare ever
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|image = Icon184.png}}
+
|image=Icon357.png}}
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|title = The RHESSI Flare Catalog
+
|title = EVE-RHESSI DEM Models and the Low-energy Cutoff for Nonthermal Electrons
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|number = 183
+
|number = 356
|first_author = Jim McTiernan
|first_author = Jim McTiernan
-
|second_author = and Hugh Hudson
+
|second_author =  
-
|publish_date = 29 August 2012
+
|publish_date = 9 September 2019
-
|description = The Catalog is a powerful and easy-to-use access tool for the RHESSI flare observations
+
|description = Characterizing flare temperature distributions helps to define the non-thermal energy release
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|image = Icon183.png}}
+
|image=Icon356.png}}
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|title = RHESSI Catches Gamma-Ray Bursts
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|title = Stealth Coronal Mass Ejections from Active Regions
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|number = 182
+
|number = 355
-
|first_author = Jakub Ripa
+
|first_author = Jennifer O'Kane
|second_author =  
|second_author =  
-
|publish_date = 15 August 2012
+
|publish_date = 26 August 2019
-
|description = RHESSI catches gamma-ray bursts, and they come in three flavors
+
|description = Perhaps just feeble versions of the same magnetic disease...
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|image = Icon182.jpg}}
+
|image=Icon355.png}}
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|title = Dense Loop Flares
+
|title = Do Kepler Superflare Stars Really Include Slowly Rotating Sun-like Stars?‎
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|number = 181
+
|number = 354
-
|first_author = Jingnan Guo
+
|first_author = Yuta NOTSU
-
|second_author = and Gordon Emslie
+
|second_author =  
-
|publish_date =6 August 2012
+
|publish_date = 15 July 2019
-
|description = Direct electron mapping teaches us about the structure of electron acceleration in flares
+
|description = Kepler superflares hint at solar superflares
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|image = Icon181.png}}
+
|image=Icon354.png}}
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|title = The Slowest Flare
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|title = Localized Microwave and EUV Bright Structures in an Eruptive Prominence
-
|number = 180
+
|number = 353
-
|first_author = Sam Freeland
+
|first_author = Jing HUANG
-
|second_author = and Hugh Hudson
+
|second_author =  
-
|publish_date =23 July 2012
+
|publish_date = 22 June 2019
-
|description = A flare with an exceptionally slow rise phase, more than 5 hours in GOES 1-8 A soft X-rays
+
|description = Detailed correlations between EUV and microwaves in prominence fine structures
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|image = Icon180.png}}
+
|image=Icon353.png}}
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|title = Dimmings and Sustained Gamma-Ray Events
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|title =   Broken-up hard X-ray spectra found for a loop-top source during a solar limb flare
-
|number = 179
+
|number = 352
-
|first_author = Hugh Hudson
+
|first_author = Hao NING,
-
|second_author = and Nicola Omodei
+
|second_author = Yao CHEN and Jeongwoo LEE
-
|publish_date =25 June 2012
+
|publish_date = 16 June 2019
-
|description = Coronal disruptions reveal themselves as depletions and gamma-ray emissions
+
|description = SOL2017-09-10 coronal hard X-ray sources
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|image = Icon179.png}}
+
|image=Icon352.png}}
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|title = Flare Nimbus
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|title =   The Cosmic-Ray Shadow and Coronal Magnetism
-
|number = 178
+
|number = 351
-
|first_author = Susan McKenna-Lawlor
+
|first_author = Frederik Tenholt
|second_author =  
|second_author =  
-
|publish_date =14 June 2012
+
|publish_date = 27 May 2019
-
|description = The Flare Nimbus, its history and significance
+
|description = The coronal magnetic field measured in Antarctica
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|image = Icon178.jpg}}
+
|image=Icon351.png}}
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|title = RHESSI and the Transit of Venus I
+
|title =   Kristian Birkeland
-
|number = 177
+
|number = 350
-
|first_author = Hugh Hudson
+
|first_author = Hugh HUDSON
-
|second_author = and Martin Fivian
+
|second_author = and Lyndsay FLETCHER
-
|publish_date =1 June 2012
+
|publish_date = 6 May 2019
-
|description = RHESSI prepares for the June 5/6 Venus transit
+
|description = Space weather a century ago: Kristian Birkeland
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|image = Icon177.jpg}}
+
|image=Icon350.png}}
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|title = Time Profiles of Solar Flare Densities
+
|title =   Warm UV loops heated by small-scale cancellation events
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|number = 176
+
|number = 349
-
|first_author = Ryan Milligan
+
|first_author = Seray ŞAHIN
-
|second_author = and Michael Kennedy
+
|second_author = and Vasyl YURCHYSHYN
-
|publish_date =21 May 2012
+
|publish_date = 22 April 2019
-
|description = Density-diagnostic line ratios in EVE spectra
+
|description = Precisely locating the footpoints of warm coronal loops helps identify their source(s) of excitation
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|image = Icon176.png}}
+
|image=Icon349.png}}
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|title = Solar energetic electron events over one solar cycle
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|title =   Multiple Regions of Shock-accelerated Particles during a Solar Coronal Mass Ejection
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|number = 175
+
|number = 348
-
|first_author = Linghua Wang
+
|first_author = Diana MOROSAN
-
|second_author =  
+
|second_author =
-
|publish_date =7 May 2012
+
|publish_date = 1 April 2019
-
|description = The statistics of SEP electrons
+
|description = LOFAR identifies herringbone sources within the flank of the SOL2017-09-10 shock - no joke
-
|image = Icon175.png}}
+
|image=Icon348.png}}
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|title = A Shocking Type II
+
|title = Persistent Quasi-Periodic Pulsations Detected During the Large X8.2 Solar Flare
-
|number = 174
+
|number = 347
-
|first_author = Hazel Bain,
+
|first_author = Laura HAYES
-
|second_author = S&auml;m Krucker and Lyndsay Glesener
+
|second_author = and Peter GALLAGHER
-
|publish_date =30 April 2012
+
|publish_date = 25 March 2019
-
|description = The properties of global coronal waves sorted out
+
|description = The most beautiful flare has the most beautiful pulsations
-
|image = icon174.png}}
+
|image=Icon347.png}}
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|title = RHESSI and IRIS
+
|title = Is the coronal magnetic field braiding?
-
|number = 173
+
|number = 346
-
|first_author = Hugh Hudson
+
|first_author = Markus ASCHWANDEN
-
|second_author =  
+
|second_author =
-
|publish_date =16 April 2012
+
|publish_date = 11 March 2019
-
|description = Flare gold at the foot of the rainbow
+
|description = This iconic cartoon does not relate well to the observations
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|image = icon173.png}}
+
|image=Icon346.png}}
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|title = A New Day Dawns
+
|title = An energetic pre-flare: electron distributions in magnetic reconnection outflows
-
|number = 172
+
|number = 345
-
|first_author = Dale Gary
+
|first_author = Marina BATTAGLIA,
-
|second_author =  
+
|second_author = Eduard KONTAR and Galina MOTORINA
-
|publish_date =26 March 2012
+
|publish_date = 18 February 2019
-
|description = Soon, true microwave imaging spectroscopy
+
|description = Assessing energy partition in a pre-impulsive flare development
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|image = icon172.png}}
+
|image=Icon345.png}}
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|title = An Fe Cascade
+
|title = Linear Polarization in H-alpha Flares
-
|number = 171
+
|number = 344
-
|first_author = Hugh Hudson
+
|first_author = Tomoko KAWATE
-
|second_author =  
+
|second_author = and Yoichiro HANAOKA
-
|publish_date =12 March 2012
+
|publish_date = 4 February 2019
-
|description =  Iron everywhere in the EVE spectra
+
|description =  H-alpha polarization is rarely observable but, in once case, very suggestive
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|image = icon171.png}}
+
|image=Icon344.png}}
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|title = Do slow waves trigger pulsations in two-ribbon flares? An observational search‎
+
|title = Short-Period Waves
-
|number = 170
+
|number = 343
-
|first_author = A. Inglis
+
|first_author = Sijie YU
-
|second_author = and B. Dennis
+
|second_author = and Bin CHEN
-
|publish_date = 27 February 2012
+
|publish_date = 21 January 2019
-
|description =  Slow waves, QPPs, and hard X-rays
+
|description =  New decimetric imaging spectroscopy suggests Alfv&eacute;nic energy transport in flares
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|image = icon170.png}}
+
|image=Icon343.png}}
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|title = RHESSI's Tenth Anniversary
+
|title = The Interesting RHESSI/SAS Archive
-
|number = 169
+
|number = 342
-
|first_author = B. Dennis
+
|first_author = Hugh HUDSON
-
|second_author = and R. Lin
+
|second_author = and Martin FIVIAN
-
|publish_date = 15 February 2012
+
|publish_date = 8 January 2019
-
|description =  On RHESSI's tenth, a top-ten discovery list
+
|description =  The full mission database shows RHESSI to have been very stable geometrically
-
|image = icon169.png}}
+
|image=Icon342.png}}
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|title = Supra-Arcade Downflows
+
|title = Homologous White Light Solar Flares‎
-
|number = 168
+
|number = 341
-
|first_author = S. Savage
+
|first_author = Paolo ROMANO
-
|second_author = and D. McKenzie
+
|second_author = and Abouazza ELMHAMDI
-
|publish_date = 23 January 2012
+
|publish_date = 31 December 2018
-
|description =  A re-interpretation of the famous SAD tadpoles
+
|description =  Homologous white-light flares, in rapid succession, and coronal null points
-
|image = icon168.png}}
+
|image=Icon341.png}}
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|title = Flare Observations of the EUV Continua
+
|title = The flight of FOXSI-3
-
|number = 167
+
|number = 340
-
|first_author = R. Milligan
+
|first_author = Lindsay GLESENER
-
|second_author =  
+
|second_author = and Noriyuki NARUKAGE
-
|publish_date = 16 January 2012
+
|publish_date = 10 December 2018
-
|description =  The flare EUV continua now routinely observed
+
|description =  Single-photon counting and direct focusing across hard and soft energies
-
|image = icon167.png}}
+
|image=Icon340.png}}
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|title = No Hard X-rays from Comet Lovejoy
+
|title = Stellar Flares and Starspots
-
|number = 166
+
|number = 339
-
|first_author = H. Hudson
+
|first_author = Lauren DOYLE
-
|second_author = and P. Saint-Hilaire
+
|second_author =
-
|publish_date = 19 December 2011
+
|publish_date = 3 December 2018
-
|description =  An amazing sungrazing comet, but not detectable at high energies
+
|description =  Stellar flares don't spatially match their starspots
-
|image = icon166.png}}
+
|image=Icon339.png}}
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|title = Modelling spatially resolved X-ray polarization
+
|title = Neutron Production in Solar Flares
-
|number = 165
+
|number = 338
-
|first_author = N. Jeffrey
+
|first_author = Ron MURPHY
-
|second_author = and E. Kontar
+
|second_author = and Gerry SHARE
-
|publish_date = 12 December 2011
+
|publish_date = 26 November 2018
-
|description =  Spatial distribution of X-ray polarization, and its implications
+
|description =  Neutron astronomy helps us understand solar flares
-
|image = icon165.png}}
+
|image=Icon338.png}}
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|title = Slowly but surely towards the huge amount of energy II
+
|title = Cycle 25 Strikes Again
-
|number = 164
+
|number = 337
-
|first_author = S. Ko&#322;oma&#324;ski
+
|first_author = Kamil BICZ
-
|second_author = and T. Mrozek
+
|second_author =
-
|publish_date = 28 November 2011
+
|publish_date = 20 November 2018
-
|description =  Analysis of the huge energies of loop-top sources in flares
+
|description =  A second, larger Cycle 25 sunspot
-
|image = icon164.png}}
+
|image=Icon337.png}}
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|title = X-ray and H-alpha Flare Impulses
+
|title = Remembering Marcos Machado via his research
-
|number = 163
+
|number = 336
-
|first_author = K. Radziszewski
+
|first_author = Hugh HUDSON
-
|second_author = and P. Rudawy
+
|second_author =
-
|publish_date = 14 November 2011
+
|publish_date = 13 November 2018
-
|description =  Strikingly precise correlations of H-alpha kernels and hard X-ray bursts
+
|description =  Recalling a friend and colleague, and admiring his final paper
-
|image = icon163.jpg}}
+
|image=Icon336.png}}
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|title = Slowly but surely towards the huge amount of energy I
+
|title = CORONAS/SPIRIT Mg XII and Nanoflares‎
-
|number = 162
+
|number = 335
-
|first_author = Urszula B&#261;k-St&#281;&#347;licka
+
|first_author = Anton REVA
-
|second_author = and Tomasz Mrozek, Sylwester Ko&#322;oma&#324;ski
+
|second_author =
-
|publish_date = 31 October 2011
+
|publish_date = 22 October 2018
-
|description =  The energetics of "slow LDEs"
+
|description =  Monochromatic Mg XII spectroheliography sets severe limits on nanoflare heating models
-
|image = icon162.png}}
+
|image=Icon335.png}}
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|title = Quasi-Periodic Pulsations: Fermi/GBM Results
+
|title = White-light Emission and Non-thermal Electrons‎
-
|number = 161
+
|number = 334
-
|first_author = David Gruber
+
|first_author = Kyoung-Sun LEE
-
|second_author = and Pawel Lachowicz
+
|second_author =
-
|publish_date = 24 October 2011
+
|publish_date = 8 October 2018
-
|description =  Dealing with red noise
+
|description =  An intimate relationship between accelerated electrons and visible flare continuum
-
|image = icon161.png}}
+
|image=Icon334.png}}
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|title = A Flare in 3D
+
|title = Coronal Hard X-ray Sources Revisited
-
|number = 160
+
|number = 333
-
|first_author = Hugh Hudson
+
|first_author = Brian DENNIS
-
|second_author = and Juan Carlos Martinez Oliveros
+
|second_author =
-
|publish_date = 10 October 2011
+
|publish_date = 24 September 2018
-
|description =  Solar astrometry in 3D
+
|description =  Reporting some over-interpretation of the evidence for "coronal thick targets"
-
|image = icon160.gif}}
+
|image=Icon333.png}}
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|title = Solar Max Arrives
+
|title = Photospheric response to a flare
-
|number = 159
+
|number = 332
-
|first_author = Hugh Hudson
+
|first_author = Mike WHEATLAND
-
|second_author = and Richard Schwartz
+
|second_author =
-
|publish_date = 28 September 2011
+
|publish_date = 17 September 2018
-
|description =  Seven X-class flares already in 2011
+
|description =  Sudden changes in the magnetic field in the low atmosphere associated with particle acceleration
-
|image = icon159.png}}
+
|image=Icon332.png}}
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|title = Two-stage SEE Shows Reconnection
+
|title =   New Views of Global Solar Magnetic Field Evolution Over Four Solar Cycles
-
|number = 158
+
|number = 331
-
|first_author = Yang Su
+
|first_author = David WEBB
-
|second_author = and Brian Dennis
+
|second_author =
-
|publish_date = 8 September 2011
+
|publish_date = 27 August 2018
-
|description =  Reconnection late in a flare
+
|description = A digital archive of Pat McIntosh's 44 years of solar synoptic observations  
-
|image = icon158.png}}
+
|image=Icon331.png}}
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|title = Scattered Light: Inverse Compton Scattering and Coronal Hard X-ray Sources
+
|title =   Understanding the co-spatial return current in solar flares
-
|number = 157
+
|number = 330
-
|first_author = B. Chen
+
|first_author = Meriem ALAOUI
-
|second_author = and T. S. Bastian
+
|second_author = and Gordon HOLMAN
-
|publish_date = 17 August 2011
+
|publish_date = 6 August 2018
-
|description = Inverse Compton radiation - gaining momentum
+
|description = Completing the circuit in a thick-target model 
-
|image = icon157.png}}
+
|image=Icon330.png}}
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|title = X-ray, EUV & WL emission heights observed by RHESSI & SDO
+
|title = 3D Magnetic Reconnection at a Coronal Null Point
-
|number = 156
+
|number = 329
-
|first_author = Marina Battaglia
+
|first_author = Shane MALONEY,
-
|second_author = and Eduard Kontar
+
|second_author = Aidan O'Flannagain and Peter Gallagher
-
|publish_date = 24 July 2011
+
|publish_date = 30 July 2018
-
|description =  A first - the relative height of hard X-ray and white-light flare sources
+
|description = Large-scale reconnection involved in Type I radio noise storm  
-
|image = icon156.png}}
+
|image=Icon329.png}}
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|title = Hard X-rays and Sympathy
+
|title = The true dawn of multimessenger astronomy
-
|number = 155
+
|number = 328
|first_author = Hugh Hudson
|first_author = Hugh Hudson
|second_author =  
|second_author =  
-
|publish_date = 13 July 2011
+
|publish_date = 23 July 2018
-
|description = A hard X-ray spike elicits a sympathetic response
+
|description = Ever since the Carrington flare
-
|image = icon155.png}}
+
|image=Icon328.png}}
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|title = Suzaku Microflares
+
|title = Microwave Imaging Spectroscopy of Flares is Here‎
-
|number = 154
+
|number = 327
-
|first_author = S. Ishikawa
+
|first_author = Dale E. Gary,
-
|second_author =  
+
|second_author = EOVSA and RHESSI Teams
-
|publish_date = 30 June 2011
+
|publish_date = 16 July 2018
-
|description = Microflares too have powerful particle acceleration
+
|description = Microwave imaging spectroscopy takes a giant leap forward with SOL2017-09-10
-
|image = icon154.png}}
+
|image=Icon327.png}}
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|title = Acceleration without Heating
+
|title = Coronal nanoflares powered by footpoint reconnection
-
|number = 153
+
|number = 326
-
|first_author = G. Fleishman &
+
|first_author = Pradeep Chitta,
-
|second_author = E. Kontar
+
|second_author = Hardi Peter, and Sami Solanki
-
|publish_date = 13 June 2011
+
|publish_date = 9 July 2018
-
|description = Strong hard X-rays and weak soft X-rays - breaking the paradigm?
+
|description = Coronal nanoflares in active region cores can be powered by the magnetic reconnection in the lower solar atmosphere
-
|image = icon153.png}}
+
|image=Icon326.png}}
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|title = DIY spectroscopy: Analyzing AIA diffraction patterns
+
|title = A remarkable, but confused, coronal hard X-ray source
-
|number = 152
+
|number = 325
-
|first_author = C. L. Raftery &
+
|first_author = Alexandra Lysenko,
-
|second_author = S. Krucker
+
|second_author = Larisa Kashapova and Hugh Hudson
-
|publish_date = 30 May 2011
+
|publish_date = 25 June 2018
-
|description = Imaging spectroscopy in the EUV, at AIA resolution
+
|description = A remarkable flare in 1999 adds to our short list of extended coronal hard X-ray/microwave sources
-
|image = icon152.png}}
+
|image=Icon325.png}}
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|title = EVE/ESP and the Neupert Effect
+
|title = Understanding HMI pseudocontinuum in white-light flares‎
-
|number = 151
+
|number = 324
-
|first_author = H. Hudson
+
|first_author = Michal &Scaron;vanda
-
|second_author =  
+
|second_author = et al.
-
|publish_date = 9 May 2011
+
|publish_date = 28 May 2018
-
|description = The Neupert Effect works, sort of, in a limb gamma-ray flare
+
|description = The HMI pseudocontinuum (Ic) is ill-calibrated in regions with strong fields, i.e. for white-light flares
-
|image = icon151.png}}
+
|image=Icon324.png}}
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|title = Decimetric pulsations and coronal X-ray sources
+
|title = To beam or not to beam - that is (still) the question
-
|number = 150
+
|number = 323
-
|first_author = A. Benz,
+
|first_author = Paulo Sim&otilde;es
-
|second_author = M. Battaglia, and N. Vilmer
+
|second_author = and Hugh Hudson
-
|publish_date = 18 April 2011
+
|publish_date = 14 May 2018
-
|description = Radio pulsations may illuminate a strongly non-radial current sheet
+
|description = Descriptions of the lower solar atmosphere of flares <i>ca.</i> Cycle 21 sound surprisingly current  
-
|image = icon150.png}}
+
|image=Icon323.png}}
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|title = The Alfven Speed above a Sunspot, and Gamma-rays
+
|title = Observation of Cosmic Ray Spallation Events from SoHO‎
-
|number = 149
+
|number = 322
-
|first_author = H. Hudson
+
|first_author = Serge Koutchmy
-
|second_author = and L. Fletcher
+
|second_author = and Ehsan Tavabi
-
|publish_date = 12 April 2011
+
|publish_date = 7 May 2018
-
|description = Flare effects in sunspot umbrae
+
|description = LASCO's images capture high-energy nuclear interactions from cosmic-ray hits
-
|image = icon149.png}}
+
|image=Icon322.png}}
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|title = Slow Magnetoacoustic Waves in Two-Ribbon Flares
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|title = A Sunspot from Cycle 25 for sure
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|number = 148
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|number = 321
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|first_author = V. Nakariakov
+
|first_author = Tomek Mrozek
-
|second_author = and I. Zimovets
+
|second_author = and Hugh Hudson
-
|publish_date = 17 March 2011
+
|publish_date = 10 April 2018
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|description = Wave dynamics explains arcade development
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|description = YES! Cycle 25 is here!
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|image = icon148.png}}
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|image=Icon321.png}}
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|title = First Sunquake of Solar Cycle 24 Observed by Solar Dynamics Observatory
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|title = Blue-wing enhancement of the Mg II h and k lines in a flare
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|number = 147
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|number = 320
-
|first_author = A. G. Kosovichev
+
|first_author = Akiko TEI
-
|second_author =  
+
|second_author =
-
|publish_date = 7 March 2011
+
|publish_date = 9 April 2018
-
|description = An X-class flare - and a sunquake
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|description = Flare loops involve a cool upflow preceding the hot evaporation flow
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|image = icon147.png}}
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|image=Icon320.png}}
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|title = M is for Magnifique Part Deux
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|title = NuSTAR detects X-ray flares in the quiet Sun
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|number = 146
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|number = 319
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|first_author = Steven Christe
+
|first_author = Matej Kuhar
-
|second_author = and Andrew Inglis
+
|second_author = and S&auml;m Krucker
-
|publish_date = 22 February 2011
+
|publish_date = 26 March 2018
-
|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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|description =  Quiet-Sun flares may not be powerful, but they look a lot like ordinary flares
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|image = icon146.png}}
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|image=Icon319.png}}
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|title = At last, the EUV Spectrum
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|title = Homologous CME/flares from AR 12371
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|number = 145
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|number = 318
 +
|first_author = Panditi Vemareddy
 +
|second_author = and Pascal Demoul&iacute;n
 +
|publish_date = 19 March 2018
 +
|description =  An excellent set of homologous flare/CMEs analyzed and explained
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|image=Icon318.png}}
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|title =  Non-Maxwellian Diagnostics from SDO/EVE Spectra of an X-class Flare
 +
|number = 317
 +
|first_author = Elena Dzif&#x10d;&aacute;kov&aacute;
 +
|second_author = and Jaroslav Dud&iacute;k
 +
|publish_date = 16 February 2018
 +
|description =  Ratios of high-excitation ions can readily detect &kappa;-distributions in flare plasmas
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|image=Icon317.png}}
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|title =  Joint MinXSS and RHESSI Flare X-ray Spectra between 1 and 15 keV
 +
|number = 316
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|first_author = Chris Moore, Brian Dennis and the MinXSS Science Team
 +
|publish_date = 5 February 2018
 +
|description =  MinXSS adds systematic views of flare soft X-ray spectra to RHESSI imagery
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|image=Icon316.png}}
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|title =  Parameterized Flare Models with Chromospheric Compressions
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|number = 315
 +
|first_author = Adam Kowalski & Joel Allred
 +
|publish_date = 17 January 2018
 +
|description =  A new approach to modeling the lower flare atmosphere
 +
|image=FlareModelsKowalskiAllred.png}}
 +
 
 +
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|title =  A Curious Sunspot Group in 2018
 +
|number = 314
|first_author = Hugh Hudson
|first_author = Hugh Hudson
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|second_author =
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|publish_date = 14 January 2018
-
|publish_date = 8 February 2011
+
|description =  The first new sunspot group of 2018 emerged at the wrong latitude
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|description =  The main flare radiated energy is not in the EUV
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|image = Icon314.png}}
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|image = icon145.png}}
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|title = Black and White Flares
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|title = Tecumseh's Eclipse and Astrophysics
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|number = 144
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|number = 313
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|first_author = Juan Carlos Martinez Oliveros
+
|first_author = Hugh Hudson
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|second_author = and Charles Lindsey
+
|publish_date = 25 December 2017
-
|publish_date = 24 January 2011
+
|description =  The solar corona was first recognized as such, and named, in an eclipse of 1806
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|description =  HMI sees a black-light flare (?)
+
|image = Icon313.png}}
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|image = icon144.png}}
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|title = The Flares of the RHESSI Monograph
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|title = Hunting for Hidden Tiny Flares
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|number = 143
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|number = 312
 +
|first_author = Shin-nosuke ISHIKAWA
 +
|publish_date = 27 November 2017
 +
|description =  FOXSI-2 says that episodic energy releases are still viable as a part of the coronal heating problem.
 +
|image = Icon312.png}}
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|title =  Unusual Type III Burst Dynamics Produced by Diverging Magnetic Fields
 +
|number = 311
 +
|first_author = Patrick McCauley
 +
|publish_date = 20 November 2017
 +
|description =  Unusual type III bursts follow coronal separatrix structures.
 +
|image = Icon311.png}}
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 +
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|title =  Valderrama in the 21st Century
 +
|number = 310
|first_author = Hugh Hudson
|first_author = Hugh Hudson
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|second_author = and Gordon Emslie
+
|publish_date = 31 October 2017
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|publish_date = 11 January 2011
+
|description =  A newly-described white-light flare from the 19th century!..
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|description =  The top ten RHESSI flares thus far
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|image = Icon310.png}}
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|image = icon143.png}}
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|title = Brilliant Timing
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|title = Electron Scattering in the Flaring Corona
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|number = 142
+
|number = 309
 +
|first_author = Sophie Musset
 +
|publish_date = 24 October 2017
 +
|description = Diffusive transport may contribute to the trapping of electrons in coronal X-ray sources
 +
|image = Icon309.png}}
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|title =  The Power of Turbulence
 +
|number = 308
 +
|first_author = Nic Bian
 +
|publish_date = 25 September 2017
 +
|description = Turbulent energy content may underlie flare energy transfer, magnetic reconnection, and particle acceleration
 +
|image = Icon308.png}}
 +
 
 +
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|title =  The Kelvin Force and Loop-Top Concentration
 +
|number = 307
 +
|first_author = Kiyoto SHIBASAKI
 +
|publish_date = 18 September 2017
 +
|description = New physics can explain the perplexing overpressure at the flare looptop regions
 +
|image = Icon307.png}}
 +
 
 +
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|title = The Last Best Flare of Cycle 24?
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|number = 306
|first_author = S&auml;m Krucker
|first_author = S&auml;m Krucker
|second_author = and Hugh Hudson
|second_author = and Hugh Hudson
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|publish_date = 20 December 2010
+
|publish_date = 11 September 2017
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|description = Hinode and RHESSI observations strain the credibility of the thick-target model
+
|description = Right on schedule, Cycle 24 has produced a great flare (with a GLE)
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|image = icon142.png}}
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|image = Icon306.png}}
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|title = M is for Magnifique
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|title = Electric Current Neutralization and Solar Eruption in Active Regions
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|number = 141
+
|number = 305
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|first_author = Steven Christe
+
|first_author = Yang LIU
-
|second_author = and Andrew Inglis
+
|second_author =  
-
|publish_date = 6 December 2010
+
|publish_date = 28 August 2017
-
|description = RHESSI and SDO see a remarkable flare
+
|description = Active current systems in the solar corona don't have return currents
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|image = icon141.png}}
+
|image = Icon305.png}}
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|title = RHESSI and the Megamovie
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|number = 304
 +
|first_author = Hugh Hudson, Laura Peticolas,
 +
|second_author = and Juan Carlos Mart&iacute;nez Oliveros
 +
|publish_date = 31 July 2017
 +
|description = A wholly new way to view a solar eclipse, and to do solar astrometry
 +
|image = Icon304.png}}
 +
 
 +
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|title = Bastille Day 2017
 +
|number = 303
 +
|first_author = Hugh Hudson
 +
|second_author = and S&auml;m Krucker
 +
|publish_date = 24 July 2017
 +
|description = Interesting flares really do happen on Bastille Day...
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|image = Icon303.png}}
 +
 
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|title = The Solar X-ray Limb III
 +
|number = 302
 +
|first_author = Marina Battaglia
 +
|second_author = and Gordon Hurford
 +
|publish_date = 12 June 2017
 +
|description = RHESSI succeeds with a wholly new way to measure the solar diameter
 +
|image = Icon302.png}}
 +
 
 +
{{Nugget Badge
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|title = Double Coronal X-ray and Microwave Sources Associated With A Magnetic Breakout Solar Eruption
 +
|number = 301
 +
|first_author = Yao CHEN
 +
|second_author =
 +
|publish_date = 29 May 2017
 +
|description = A different explanation of the double coronal hard X-ray sources
 +
|image = Icon301.png}}
 +
 
 +
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|title = A Lasso Model for Solar Gamma-ray Events
 +
|number = 300
 +
|first_author = Hugh Hudson
 +
|second_author =
 +
|publish_date = 15 May 2017
 +
|description = A toy model hoping to explain the SEP/LAT relationship
 +
|image = Icon300.png}}
 +
 
 +
[[RHESSI Science Nuggets 200 to 299|Next Nuggets]]

Latest revision as of 12:34, 26 April 2024

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

468 Is there HOPE for Hyder flares...
15 March 2024 by Hugh HUDSON
Icon468.png
Filament eruptions/Hyder flares/disparitions brusques may all show HOPE. Click the title to read more.
467 Sun-as-a-star Analysis of the M8.7 Flare on 2022 October 2 Using H-alpha and EUV Spectra Taken by SMART/SDDI and SDO/EVE
19 February 2024 by Takato OTSU
Icon467.png
Whole-Sun spectroscopic observations can readily detect ejecta. Click the title to read more.
466 Unexpected Asymmetry in GeV Emission
15 January 2024 by Bruno ARSIOLI and Elena ORLANDO
Icon466.png
The high-energy solar gamma radiation shows inexplicable but fascinating properties. Click the title to read more.
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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