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]]. | + | 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 = Is the coronal magnetic field braiding? | ||
+ | |number = 346 | ||
+ | |first_author = Markus ASCHWANDEN | ||
+ | |second_author = | ||
+ | |publish_date = 11 March 2019 | ||
+ | |description = This iconic cartoon does not relate well to the observations | ||
+ | |image=Icon346.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = An energetic pre-flare: electron distributions in magnetic reconnection outflows | ||
+ | |number = 345 | ||
+ | |first_author = Marina BATTAGLIA | ||
+ | |second_author = Eduard KONTAR and Galina MOTORINA | ||
+ | |publish_date = 18 February 2019 | ||
+ | |description = Assessing energy partition in a pre-impulsive flare development | ||
+ | |image=Icon345.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Linear Polarization in H-alpha Flares | ||
+ | |number = 344 | ||
+ | |first_author = Tomoko KAWATE | ||
+ | |second_author = and Yoichiro HANAOKA | ||
+ | |publish_date = 4 February 2019 | ||
+ | |description = H-alpha polarization is rarely observable but, in once case, very suggestive | ||
+ | |image=Icon344.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Short-Period Waves | ||
+ | |number = 343 | ||
+ | |first_author = Sijie YU | ||
+ | |second_author = and Bin CHEN | ||
+ | |publish_date = 21 January 2019 | ||
+ | |description = New decimetric imaging spectroscopy suggests Alfvénic energy transport in flares | ||
+ | |image=Icon343.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = The Interesting RHESSI/SAS Archive | ||
+ | |number = 342 | ||
+ | |first_author = Hugh HUDSON | ||
+ | |second_author = and Martin FIVIAN | ||
+ | |publish_date = 8 January 2019 | ||
+ | |description = The full mission database shows RHESSI to have been very stable geometrically | ||
+ | |image=Icon342.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Homologous White Light Solar Flares | ||
+ | |number = 341 | ||
+ | |first_author = Paolo ROMANO | ||
+ | |second_author = and Abouazza ELMHAMDI | ||
+ | |publish_date = 31 December 2018 | ||
+ | |description = Homologous white-light flares, in rapid succession, and coronal null points | ||
+ | |image=Icon341.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = The flight of FOXSI-3 | ||
+ | |number = 340 | ||
+ | |first_author = Lindsay GLESENER | ||
+ | |second_author = and Noriyuki NARUKAGE | ||
+ | |publish_date = 10 December 2018 | ||
+ | |description = Single-photon counting and direct focusing across hard and soft energies | ||
+ | |image=Icon340.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Stellar Flares and Starspots | ||
+ | |number = 339 | ||
+ | |first_author = Lauren DOYLE | ||
+ | |second_author = | ||
+ | |publish_date = 3 December 2018 | ||
+ | |description = Stellar flares don't spatially match their starspots | ||
+ | |image=Icon339.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Neutron Production in Solar Flares | ||
+ | |number = 338 | ||
+ | |first_author = Ron MURPHY | ||
+ | |second_author = and Gerry SHARE | ||
+ | |publish_date = 26 November 2018 | ||
+ | |description = Neutron astronomy helps us understand solar flares | ||
+ | |image=Icon338.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Cycle 25 Strikes Again | ||
+ | |number = 337 | ||
+ | |first_author = Kamil BICZ | ||
+ | |second_author = | ||
+ | |publish_date = 20 November 2018 | ||
+ | |description = A second, larger Cycle 25 sunspot | ||
+ | |image=Icon337.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Remembering Marcos Machado via his research | ||
+ | |number = 336 | ||
+ | |first_author = Hugh HUDSON | ||
+ | |second_author = | ||
+ | |publish_date = 13 November 2018 | ||
+ | |description = Recalling a friend and colleague, and admiring his final paper | ||
+ | |image=Icon336.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = CORONAS/SPIRIT Mg XII and Nanoflares | ||
+ | |number = 335 | ||
+ | |first_author = Anton REVA | ||
+ | |second_author = | ||
+ | |publish_date = 22 October 2018 | ||
+ | |description = Monochromatic Mg XII spectroheliography sets severe limits on nanoflare heating models | ||
+ | |image=Icon335.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = White-light Emission and Non-thermal Electrons | ||
+ | |number = 334 | ||
+ | |first_author = Kyoung-Sun LEE | ||
+ | |second_author = | ||
+ | |publish_date = 8 October 2018 | ||
+ | |description = An intimate relationship between accelerated electrons and visible flare continuum | ||
+ | |image=Icon334.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Coronal Hard X-ray Sources Revisited | ||
+ | |number = 333 | ||
+ | |first_author = Brian DENNIS | ||
+ | |second_author = | ||
+ | |publish_date = 24 September 2018 | ||
+ | |description = Reporting some over-interpretation of the evidence for "coronal thick targets" | ||
+ | |image=Icon333.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Photospheric response to a flare | ||
+ | |number = 332 | ||
+ | |first_author = Mike WHEATLAND | ||
+ | |second_author = | ||
+ | |publish_date = 17 September 2018 | ||
+ | |description = Sudden changes in the magnetic field in the low atmosphere associated with particle acceleration | ||
+ | |image=Icon332.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = New Views of Global Solar Magnetic Field Evolution Over Four Solar Cycles | ||
+ | |number = 331 | ||
+ | |first_author = David WEBB | ||
+ | |second_author = | ||
+ | |publish_date = 27 August 2018 | ||
+ | |description = A digital archive of Pat McIntosh's 44 years of solar synoptic observations | ||
+ | |image=Icon331.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Understanding the co-spatial return current in solar flares | ||
+ | |number = 330 | ||
+ | |first_author = Meriem ALAOUI | ||
+ | |second_author = and Gordon HOLMAN | ||
+ | |publish_date = 6 August 2018 | ||
+ | |description = Completing the circuit in a thick-target model | ||
+ | |image=Icon330.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = 3D Magnetic Reconnection at a Coronal Null Point | ||
+ | |number = 329 | ||
+ | |first_author = Shane MALONEY, | ||
+ | |second_author = Aidan O'Flannagain and Peter Gallagher | ||
+ | |publish_date = 30 July 2018 | ||
+ | |description = Large-scale reconnection involved in Type I radio noise storm | ||
+ | |image=Icon329.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = The true dawn of multimessenger astronomy | ||
+ | |number = 328 | ||
+ | |first_author = Hugh Hudson | ||
+ | |second_author = | ||
+ | |publish_date = 23 July 2018 | ||
+ | |description = Ever since the Carrington flare | ||
+ | |image=Icon328.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Microwave Imaging Spectroscopy of Flares is Here | ||
+ | |number = 327 | ||
+ | |first_author = Dale E. Gary, | ||
+ | |second_author = EOVSA and RHESSI Teams | ||
+ | |publish_date = 16 July 2018 | ||
+ | |description = Microwave imaging spectroscopy takes a giant leap forward with SOL2017-09-10 | ||
+ | |image=Icon327.png}} | ||
+ | |||
+ | {{Nugget Badge | ||
+ | |title = Coronal nanoflares powered by footpoint reconnection | ||
+ | |number = 326 | ||
+ | |first_author = Pradeep Chitta, | ||
+ | |second_author = Hardi Peter, and Sami Solanki | ||
+ | |publish_date = 9 July 2018 | ||
+ | |description = Coronal nanoflares in active region cores can be powered by the magnetic reconnection in the lower solar atmosphere | ||
+ | |image=Icon326.png}} | ||
{{Nugget Badge | {{Nugget Badge |
Revision as of 18:00, 15 March 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.
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. | ||
---|---|---|
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. | ||
---|---|---|
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. | ||
---|---|---|
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. | ||
---|---|---|
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. | ||
---|---|---|
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. | ||
---|---|---|
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. | ||
---|---|---|
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. | ||
---|---|---|
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. | ||
---|---|---|
337 | Cycle 25 Strikes Again | |
20 November 2018 by Kamil BICZ | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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. | ||
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 | ||
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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