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 as well as [[:Category:RHESSI Nugget List|yearly lists]]. We welcome volunteer authors - please see our page of [[Help:For_Authors| help for authors]]. | 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]]. | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Non-radial jets on the edges of active regions | ||
+ | |number = 361 | ||
+ | |first_author = Peter Wyper | ||
+ | |second_author = | ||
+ | |publish_date = 14 October 2019 | ||
+ | |description = The very common jet structures we see can naturally combine twist and breakout | ||
+ | |image=Icon361.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Searching SOLfully within the Nuggets | ||
+ | |number = 360 | ||
+ | |first_author = Hugh Hudson | ||
+ | |second_author = | ||
+ | |publish_date = 7 October 2019 | ||
+ | |description = The IAU target identifier works well for finding items about a particular event | ||
+ | |image=Icon360.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Submillimeter Radiation as the Thermal Component of the Neupert Effect | ||
+ | |number = 359 | ||
+ | |first_author = Guillermo Giménez de Castro | ||
+ | |second_author = | ||
+ | |publish_date = 31 September 2019 | ||
+ | |description = Flare radiation at the highest frequencies can be bremsstrahlung | ||
+ | |image=Icon359.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = The "Last Best" Flares | ||
+ | |number = 358 | ||
+ | |first_author = Hugh Hudson, | ||
+ | |second_author = Ed Cliver, and Brian Dennis | ||
+ | |publish_date = 24 September 2019 | ||
+ | |description = Major flares tend to happen at the very ends of sunspot cycles | ||
+ | |image=Icon358.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Dynamic Processes of the Moreton Wave on 2014 March 29 | ||
+ | |number = 357 | ||
+ | |first_author = Denis Cabezas | ||
+ | |second_author = and the FMT team | ||
+ | |publish_date = 16 September 2019 | ||
+ | |description = A beautiful Moreton wave excited by the best-observed flare ever | ||
+ | |image=Icon357.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = EVE-RHESSI DEM Models and the Low-energy Cutoff for Nonthermal Electrons | ||
+ | |number = 356 | ||
+ | |first_author = Jim McTiernan | ||
+ | |second_author = | ||
+ | |publish_date = 9 September 2019 | ||
+ | |description = Characterizing flare temperature distributions helps to define the non-thermal energy release | ||
+ | |image=Icon356.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Stealth Coronal Mass Ejections from Active Regions | ||
+ | |number = 355 | ||
+ | |first_author = Jennifer O'Kane | ||
+ | |second_author = | ||
+ | |publish_date = 26 August 2019 | ||
+ | |description = Perhaps just feeble versions of the same magnetic disease... | ||
+ | |image=Icon355.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Do Kepler Superflare Stars Really Include Slowly Rotating Sun-like Stars? | ||
+ | |number = 354 | ||
+ | |first_author = Yuta NOTSU | ||
+ | |second_author = | ||
+ | |publish_date = 15 July 2019 | ||
+ | |description = Kepler superflares hint at solar superflares | ||
+ | |image=Icon354.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Localized Microwave and EUV Bright Structures in an Eruptive Prominence | ||
+ | |number = 353 | ||
+ | |first_author = Jing HUANG | ||
+ | |second_author = | ||
+ | |publish_date = 22 June 2019 | ||
+ | |description = Detailed correlations between EUV and microwaves in prominence fine structures | ||
+ | |image=Icon353.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Broken-up hard X-ray spectra found for a loop-top source during a solar limb flare | ||
+ | |number = 352 | ||
+ | |first_author = Hao NING, | ||
+ | |second_author = Yao CHEN and Jeongwoo LEE | ||
+ | |publish_date = 16 June 2019 | ||
+ | |description = SOL2017-09-10 coronal hard X-ray sources | ||
+ | |image=Icon352.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = The Cosmic-Ray Shadow and Coronal Magnetism | ||
+ | |number = 351 | ||
+ | |first_author = Frederik Tenholt | ||
+ | |second_author = | ||
+ | |publish_date = 27 May 2019 | ||
+ | |description = The coronal magnetic field measured in Antarctica | ||
+ | |image=Icon351.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Kristian Birkeland | ||
+ | |number = 350 | ||
+ | |first_author = Hugh HUDSON | ||
+ | |second_author = and Lyndsay FLETCHER | ||
+ | |publish_date = 6 May 2019 | ||
+ | |description = Space weather a century ago: Kristian Birkeland | ||
+ | |image=Icon350.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Warm UV loops heated by small-scale cancellation events | ||
+ | |number = 349 | ||
+ | |first_author = Seray ŞAHIN | ||
+ | |second_author = and Vasyl YURCHYSHYN | ||
+ | |publish_date = 22 April 2019 | ||
+ | |description = Precisely locating the footpoints of warm coronal loops helps identify their source(s) of excitation | ||
+ | |image=Icon349.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Multiple Regions of Shock-accelerated Particles during a Solar Coronal Mass Ejection | ||
+ | |number = 348 | ||
+ | |first_author = Diana MOROSAN | ||
+ | |second_author = | ||
+ | |publish_date = 1 April 2019 | ||
+ | |description = LOFAR identifies herringbone sources within the flank of the SOL2017-09-10 shock - no joke | ||
+ | |image=Icon348.png}} | ||
{{Nugget Badge | {{Nugget Badge | ||
Line 5: | Line 131: | ||
|number = 347 | |number = 347 | ||
|first_author = Laura HAYES | |first_author = Laura HAYES | ||
- | |second_author = Peter GALLAGHER | + | |second_author = and Peter GALLAGHER |
|publish_date = 25 March 2019 | |publish_date = 25 March 2019 | ||
|description = The most beautiful flare has the most beautiful pulsations | |description = The most beautiful flare has the most beautiful pulsations | ||
Line 22: | Line 148: | ||
|title = An energetic pre-flare: electron distributions in magnetic reconnection outflows | |title = An energetic pre-flare: electron distributions in magnetic reconnection outflows | ||
|number = 345 | |number = 345 | ||
- | |first_author = Marina BATTAGLIA | + | |first_author = Marina BATTAGLIA, |
|second_author = Eduard KONTAR and Galina MOTORINA | |second_author = Eduard KONTAR and Galina MOTORINA | ||
|publish_date = 18 February 2019 | |publish_date = 18 February 2019 |
Revision as of 14:15, 12 October 2019
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.
361 | Non-radial jets on the edges of active regions | |
14 October 2019 by Peter Wyper | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
The most beautiful flare has the most beautiful pulsations. Click the title to read more. | ||
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346 | Is the coronal magnetic field braiding? | |
11 March 2019 by Markus ASCHWANDEN | ||
This iconic cartoon does not relate well to the observations. Click the title to read more. | ||
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345 | An energetic pre-flare: electron distributions in magnetic reconnection outflows | |
18 February 2019 by Marina BATTAGLIA, Eduard KONTAR and Galina MOTORINA | ||
Assessing energy partition in a pre-impulsive flare development. Click the title to read more. | ||
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344 | Linear Polarization in H-alpha Flares | |
4 February 2019 by Tomoko KAWATE and Yoichiro HANAOKA | ||
H-alpha polarization is rarely observable but, in once case, very suggestive. Click the title to read more. | ||
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343 | Short-Period Waves | |
21 January 2019 by Sijie YU and Bin CHEN | ||
New decimetric imaging spectroscopy suggests Alfvénic energy transport in flares. Click the title to read more. | ||
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342 | The Interesting RHESSI/SAS Archive | |
8 January 2019 by Hugh HUDSON and Martin FIVIAN | ||
The full mission database shows RHESSI to have been very stable geometrically. Click the title to read more. | ||
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341 | Homologous White Light Solar Flares | |
31 December 2018 by Paolo ROMANO and Abouazza ELMHAMDI | ||
Homologous white-light flares, in rapid succession, and coronal null points. Click the title to read more. | ||
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340 | The flight of FOXSI-3 | |
10 December 2018 by Lindsay GLESENER and Noriyuki NARUKAGE | ||
Single-photon counting and direct focusing across hard and soft energies. Click the title to read more. | ||
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339 | Stellar Flares and Starspots | |
3 December 2018 by Lauren DOYLE | ||
Stellar flares don't spatially match their starspots. Click the title to read more. | ||
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338 | Neutron Production in Solar Flares | |
26 November 2018 by Ron MURPHY and Gerry SHARE | ||
Neutron astronomy helps us understand solar flares. Click the title to read more. | ||
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337 | Cycle 25 Strikes Again | |
20 November 2018 by Kamil BICZ | ||
A second, larger Cycle 25 sunspot. Click the title to read more. | ||
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336 | Remembering Marcos Machado via his research | |
13 November 2018 by Hugh HUDSON | ||
Recalling a friend and colleague, and admiring his final paper. Click the title to read more. | ||
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335 | CORONAS/SPIRIT Mg XII and Nanoflares | |
22 October 2018 by Anton REVA | ||
Monochromatic Mg XII spectroheliography sets severe limits on nanoflare heating models. Click the title to read more. | ||
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334 | White-light Emission and Non-thermal Electrons | |
8 October 2018 by Kyoung-Sun LEE | ||
An intimate relationship between accelerated electrons and visible flare continuum. Click the title to read more. | ||
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333 | Coronal Hard X-ray Sources Revisited | |
24 September 2018 by Brian DENNIS | ||
Reporting some over-interpretation of the evidence for "coronal thick targets". Click the title to read more. | ||
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332 | Photospheric response to a flare | |
17 September 2018 by Mike WHEATLAND | ||
Sudden changes in the magnetic field in the low atmosphere associated with particle acceleration. Click the title to read more. | ||
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331 | New Views of Global Solar Magnetic Field Evolution Over Four Solar Cycles | |
27 August 2018 by David WEBB | ||
A digital archive of Pat McIntosh's 44 years of solar synoptic observations. Click the title to read more. | ||
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330 | Understanding the co-spatial return current in solar flares | |
6 August 2018 by Meriem ALAOUI and Gordon HOLMAN | ||
Completing the circuit in a thick-target model. Click the title to read more. | ||
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329 | 3D Magnetic Reconnection at a Coronal Null Point | |
30 July 2018 by Shane MALONEY, Aidan O'Flannagain and Peter Gallagher | ||
Large-scale reconnection involved in Type I radio noise storm. Click the title to read more. | ||
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328 | The true dawn of multimessenger astronomy | |
23 July 2018 by Hugh Hudson | ||
Ever since the Carrington flare. Click the title to read more. | ||
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327 | Microwave Imaging Spectroscopy of Flares is Here | |
16 July 2018 by Dale E. Gary, EOVSA and RHESSI Teams | ||
Microwave imaging spectroscopy takes a giant leap forward with SOL2017-09-10. Click the title to read more. | ||
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326 | Coronal nanoflares powered by footpoint reconnection | |
9 July 2018 by Pradeep Chitta, Hardi Peter, and Sami Solanki | ||
Coronal nanoflares in active region cores can be powered by the magnetic reconnection in the lower solar atmosphere. Click the title to read more. | ||
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325 | A remarkable, but confused, coronal hard X-ray source | |
25 June 2018 by Alexandra Lysenko, Larisa Kashapova and Hugh Hudson | ||
A remarkable flare in 1999 adds to our short list of extended coronal hard X-ray/microwave sources. Click the title to read more. | ||
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324 | Understanding HMI pseudocontinuum in white-light flares | |
28 May 2018 by Michal Švanda et al. | ||
The HMI pseudocontinuum (Ic) is ill-calibrated in regions with strong fields, i.e. for white-light flares. Click the title to read more. | ||
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323 | To beam or not to beam - that is (still) the question | |
14 May 2018 by Paulo Simões and Hugh Hudson | ||
Descriptions of the lower solar atmosphere of flares ca. Cycle 21 sound surprisingly current. Click the title to read more. | ||
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322 | Observation of Cosmic Ray Spallation Events from SoHO | |
7 May 2018 by Serge Koutchmy and Ehsan Tavabi | ||
LASCO's images capture high-energy nuclear interactions from cosmic-ray hits. Click the title to read more. | ||
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321 | A Sunspot from Cycle 25 for sure | |
10 April 2018 by Tomek Mrozek and Hugh Hudson | ||
YES! Cycle 25 is here!. Click the title to read more. | ||
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320 | Blue-wing enhancement of the Mg II h and k lines in a flare | |
9 April 2018 by Akiko TEI | ||
Flare loops involve a cool upflow preceding the hot evaporation flow. Click the title to read more. | ||
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319 | NuSTAR detects X-ray flares in the quiet Sun | |
26 March 2018 by Matej Kuhar and Säm Krucker | ||
Quiet-Sun flares may not be powerful, but they look a lot like ordinary flares. Click the title to read more. | ||
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318 | Homologous CME/flares from AR 12371 | |
19 March 2018 by Panditi Vemareddy and Pascal Demoulín | ||
An excellent set of homologous flare/CMEs analyzed and explained. Click the title to read more. | ||
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317 | Non-Maxwellian Diagnostics from SDO/EVE Spectra of an X-class Flare | |
16 February 2018 by Elena Dzifčáková and Jaroslav Dudík | ||
Ratios of high-excitation ions can readily detect κ-distributions in flare plasmas. Click the title to read more. | ||
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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 | ||
MinXSS adds systematic views of flare soft X-ray spectra to RHESSI imagery. Click the title to read more. | ||
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315 | Parameterized Flare Models with Chromospheric Compressions | |
17 January 2018 by Adam Kowalski & Joel Allred | ||
A new approach to modeling the lower flare atmosphere. Click the title to read more. | ||
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314 | A Curious Sunspot Group in 2018 | |
14 January 2018 by Hugh Hudson | ||
The first new sunspot group of 2018 emerged at the wrong latitude. Click the title to read more. | ||
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313 | Tecumseh's Eclipse and Astrophysics | |
25 December 2017 by Hugh Hudson | ||
The solar corona was first recognized as such, and named, in an eclipse of 1806. Click the title to read more. | ||
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312 | Hunting for Hidden Tiny Flares | |
27 November 2017 by Shin-nosuke ISHIKAWA | ||
FOXSI-2 says that episodic energy releases are still viable as a part of the coronal heating problem.. Click the title to read more. | ||
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311 | Unusual Type III Burst Dynamics Produced by Diverging Magnetic Fields | |
20 November 2017 by Patrick McCauley | ||
Unusual type III bursts follow coronal separatrix structures.. Click the title to read more. | ||
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310 | Valderrama in the 21st Century | |
31 October 2017 by Hugh Hudson | ||
A newly-described white-light flare from the 19th century!... Click the title to read more. | ||
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309 | Electron Scattering in the Flaring Corona | |
24 October 2017 by Sophie Musset | ||
Diffusive transport may contribute to the trapping of electrons in coronal X-ray sources. Click the title to read more. | ||
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308 | The Power of Turbulence | |
25 September 2017 by Nic Bian | ||
Turbulent energy content may underlie flare energy transfer, magnetic reconnection, and particle acceleration. Click the title to read more. | ||
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307 | The Kelvin Force and Loop-Top Concentration | |
18 September 2017 by Kiyoto SHIBASAKI | ||
New physics can explain the perplexing overpressure at the flare looptop regions. Click the title to read more. | ||
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306 | The Last Best Flare of Cycle 24? | |
11 September 2017 by Säm Krucker and Hugh Hudson | ||
Right on schedule, Cycle 24 has produced a great flare (with a GLE). Click the title to read more. | ||
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305 | Electric Current Neutralization and Solar Eruption in Active Regions | |
28 August 2017 by Yang LIU | ||
Active current systems in the solar corona don't have return currents. Click the title to read more. | ||
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304 | RHESSI and the Megamovie | |
31 July 2017 by Hugh Hudson, Laura Peticolas, and Juan Carlos Martínez Oliveros | ||
A wholly new way to view a solar eclipse, and to do solar astrometry. Click the title to read more. | ||
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303 | Bastille Day 2017 | |
24 July 2017 by Hugh Hudson and Säm Krucker | ||
Interesting flares really do happen on Bastille Day.... Click the title to read more. | ||
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302 | The Solar X-ray Limb III | |
12 June 2017 by Marina Battaglia and Gordon Hurford | ||
RHESSI succeeds with a wholly new way to measure the solar diameter. Click the title to read more. | ||
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301 | Double Coronal X-ray and Microwave Sources Associated With A Magnetic Breakout Solar Eruption | |
29 May 2017 by Yao CHEN | ||
A different explanation of the double coronal hard X-ray sources. Click the title to read more. | ||
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300 | A Lasso Model for Solar Gamma-ray Events | |
15 May 2017 by Hugh Hudson | ||
A toy model hoping to explain the SEP/LAT relationship. Click the title to read more. | ||
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