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 alphabetical list of wiki Nuggets is also available as well as yearly lists. If you are looking for older Nuggets than please visit the original series 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. We welcome volunteer authors - please see our page of help for authors.

FOXSI-2 says that episodic energy releases are still viable as a part of the coronal heating problem.. Click the title to read more.
312	Hunting for Hidden Tiny Flares
312	27 November 2017 by Shin-nosuke ISHIKAWA

Unusual type III bursts follow coronal separatrix structures.. Click the title to read more.
311	Unusual Type III Burst Dynamics Produced by Diverging Magnetic Fields
311	20 November 2017 by Patrick McCauley

A newly-described white-light flare from the 19th century!... Click the title to read more.
310	Valderrama in the 21st Century
310	31 October 2017 by Hugh Hudson

Diffusive transport may contribute to the trapping of electrons in coronal X-ray sources. Click the title to read more.
309	Electron Scattering in the Flaring Corona
309	24 October 2017 by Sophie Musset

Turbulent energy content may underlie flare energy transfer, magnetic reconnection, and particle acceleration. Click the title to read more.
308	The Power of Turbulence
308	25 September 2017 by Nic Bian

New physics can explain the perplexing overpressure at the flare looptop regions. Click the title to read more.
307	The Kelvin Force and Loop-Top Concentration
307	18 September 2017 by Kiyoto SHIBASAKI

Right on schedule, Cycle 24 has produced a great flare (with a GLE). Click the title to read more.
306	The Last Best Flare of Cycle 24?
306	11 September 2017 by Säm Krucker and Hugh Hudson

Active current systems in the solar corona don't have return currents. Click the title to read more.
305	Electric Current Neutralization and Solar Eruption in Active Regions
305	28 August 2017 by Yang LIU

A wholly new way to view a solar eclipse, and to do solar astrometry. Click the title to read more.
304	RHESSI and the Megamovie
304	31 July 2017 by Hugh Hudson, Laura Peticolas, and Juan Carlos Martínez Oliveros

Interesting flares really do happen on Bastille Day.... Click the title to read more.
303	Bastille Day 2017
303	24 July 2017 by Hugh Hudson and Säm Krucker

RHESSI succeeds with a wholly new way to measure the solar diameter. Click the title to read more.
302	The Solar X-ray Limb III
302	12 June 2017 by Marina Battaglia and Gordon Hurford

A different explanation of the double coronal hard X-ray sources. Click the title to read more.
301	Double Coronal X-ray and Microwave Sources Associated With A Magnetic Breakout Solar Eruption
301	29 May 2017 by Yao CHEN

A toy model hoping to explain the SEP/LAT relationship. Click the title to read more.
300	A Lasso Model for Solar Gamma-ray Events
300	15 May 2017 by Hugh Hudson

The biggest solar telescope finds still smaller scales for white-light flaring - and more. Click the title to read more.
299	High Resolution Temporal and Spatial Structure of a White Light Flare
299	30 April 2017 by Vasyl Yurchyshyn

Retrospective searches for other useful observations of your favorite flare - how the widget did in Cycle 24. Click the title to read more.
298	Multi-Instrument Solar Flare Observations II: A SC24 retrospective
298	10 April 2017 by Ryan Milligan and Jack Ireland

Retrospective searches for other useful observations of your favorite flare. Click the title to read more.
297	Multi-Instrument Solar Flare Observations I: Solar Flare Finder
297	3 April 2017 by Ryan Milligan and Kim Tolbert

The absence of hydrogen emission lines in a white-light flare suggests an origin in the deep solar atmosphere.. Click the title to read more.
296	Suppression of Hydrogen Emission in an X-class White-light Solar Flare
296	20 March 2017 by Ondřej Procházka and Ryan Milligan

Lightning helps with microsecond timing calibrations, and is really interesting as a phenomenon of high-energy astrophysics.. Click the title to read more.
295	Radio Emissions from Double RHESSI TGFs
295	13 March 2017 by Andrey Mezentsev and Thomas Gjesteland

. Click the title to read more.
294	Edward Chupp
294	6 March 2017 by RHESSI

. Click the title to read more.
293	Pierre Kaufmann
293	19 February 2017 by RHESSI

RHESSI celebrates 15 years in orbit. Click the title to read more.
292	RHESSI's 15th Anniversary
292	13 February 2017 by Brian Dennis, Säm Krucker and Albert Shih

Systematic use of occultation lets us observe the corona in hard X-rays. Click the title to read more.
291	Hard X-ray Emission from Partially Occulted Solar Flares
291	30 January 2017 by Frederic Effenberger and Fatima Rubio da Costa

Solar minimum conditions reveal interesting properties of the GOES X-ray observations. Click the title to read more.
290	GOES Hard X-rays?
290	16 January 2017 by Hugh Hudson, Janet Machol, and Rodney Viereck

Remembering S.I. Syrovatskii; the relevance of the Shmeleva-Syrovatskii “constant density” approximation has been verified by modern high-resolution observations. Click the title to read more.
289	Syrovatskii's "constant density" approximation
289	30 December 2016 by Hugh Hudson and Paulo Simões

Correlations across the radio and X-ray spectra imply related populations of source electrons. Click the title to read more.
288	Statistical Link Between Electrons Emitting X-rays and Type III Radio Bursts
288	19 December 2016 by Hamish Reid and Nicole Vilmer

A Hale Cycle's worth of hard X-ray and soft gamma-ray flare observations. Click the title to read more.
287	KW-Sun: The Konus/WIND Hard X-ray Solar Flare Database
287	20 November 2016 by Alexandra Lysenko and the Konus/WIND Team

The inherent magnetic twist of a flaring loop can be inferred from microwave polarization signatures.. Click the title to read more.
286	Microwave Emission from Twisted Magnetic Fields
286	13 November 2016 by Mykola Gordovskyy and Philippa Browning

In pulsating flare energy release, the hard X-ray source peaks have different locations.. Click the title to read more.
285	Spatio-Temporal Dynamics of Flare Hard X-ray Pulsations
285	31 October 2016 by Ivan Zimovets, Sergey Kuznetsov, Alexander Morgachev, and Alexei Struminsky

The tail wags the dog - short time scales for coronal stresses on sunspot structure. Click the title to read more.
284	Flare-induced Impulsive Sunspot Rotation caught in High Resolution‎
284	24 October 2016 by Chang Liu and Haimin Wang

A novel hard X-ray polarimeter achieves solar "first light". Click the title to read more.
283	Hard X-ray Polarimetry from Tian Gong 2‎
283	20 October 2016 by Wojtek Hajdas

RHESSI recently spotted a very fast, very compact, and hot flare event in the deep atmosphere. Click the title to read more.
282	A flare in the deep solar atmosphere
282	26 September 2016 by Richard Schwartz and Hugh Hudson

Perspective matters - application of STEREO views to coronal dimming. Click the title to read more.
281	To be or not to be - the role of projection effects in EUV imaging
281	16 August 2016 by Karin Dissauer and Manuela Temmer

There has been dramatic progress in studying the Sun via its emission of energetic neutrons. Click the title to read more.
280	Solar flare neutrons observed on the ground and in space
280	12 August 2016 by Alexander MacKinnon

Solar energetic electrons may have complicated and informative distributions in the interplanetary medium. Click the title to read more.
279	Unexpected intensity distributions of solar electrons in the heliosphere
279	13 July 2016 by Andreas Klassen and the SEPT/STEREO team

A global coronal shock wave without a CME driver. Click the title to read more.
278	Initiation of a type II radio burst without a CME
278	4 July 2016 by Pankaj Kumar, Davina Innes, and Kyung-Suk Cho

The Sun had no spots for extended periods in June, 2016. Click the title to read more.
277	Spotlessness returns
277	27 June 2016 by Hugh Hudson

A successful anneal and RHESSI continues to provide data. Click the title to read more.
276	RHESSI has resumed operations
276	20 June 2016 by Albert Shih, Brian Dennis and Säm Krucker

A heretofore unrecognized emission mechanism for solar hard X-rays. Click the title to read more.
275	Non-thermal recombination in solar flares and microflares
275	6 June 2016 by Jeffrey Reep and John Brown

Intense pulses of energy modeled with RADYN. Click the title to read more.
274	Data-driven radiative hydrodynamic modeling of SOL2014-03-29
274	10 May 2016 by Fatima Rubio da Costa

Testing the thick-target model in an interesting flare. Click the title to read more.
273	Electron acceleration and hard X-ray emission from SOL2013-11-09
273	5 May 2016 by Yuri Tsap and Galina Motorina

Stellar activity measured by flare rates over the eons. Click the title to read more.
272	Extreme events, stellar evolution, and magnetic reconnection
272	30 April 2016 by Hugh Hudson

Flux-rope geometry via radio polarization signs. Click the title to read more.
271	Radio polarization signatures in twisted flare loops
271	25 April 2016 by Ivan Sharykin and Alexei Kuznetsov

Massive flare ejecta observed visually. Click the title to read more.
270	An Unreported White-light Prominence
270	28 March 2016 by Matt Penn and Hugh Hudson

RHESSI has begun annealing its detectors, interrupting the flow of data for several weeks. Click the title to read more.
269	RHESSI's 5th Anneal
269	23 February 2016 by Albert Shih and Brian Dennis

The Fermi/LAT long-duration events look like SOL1969-03-30. Click the title to read more.
268	A new development in the Frost-Dennis paradigm
268	22 February 2016 by Hugh Hudson, Melissa Pesce-Rollins, and Larisa Kashapova

The Earth's ionosphere reacts strongly to the occurrence of flares and CMEs. Click the title to read more.
267	When the Earth’s atmosphere becomes dynamic…
267	13 February 2016 by Manuela Temmer, Sandro Krauss and Astrid Veronig

Precise stereoscopic observations of hard X-rays can reveal electron beams. Click the title to read more.
266	Hard X-ray Directivity Measurements with STIX and MiSolFA‎
266	7 December 2015 by Diego Casadei and Hugh Hudson

New data sharpen the correlations between hard X-rays and white light, but interesting questions remain open. Click the title to read more.
265	On the Correlation of HXR and WL Emission in Solar Flares‎
265	19 November 2015 by Matej Kuhar

Incorporation of energy diffusion for electron transport helps with flare energetics. Click the title to read more.
264	How to better determine the power in non-thermal electrons from observed X-ray spectra
264	9 November 2015 by Eduard Kontar, Gordon Emslie, Natasha Jeffrey, and Nic Bian

Behavior of the X-ray Sun at low activity levels. Click the title to read more.
263	Soft and Hard X-rays, Flares, and the Corona
263	20 October 2015 by Hugh Hudson

A tool that we've had since 1976 now gives us surprisingly precise new information. Click the title to read more.
262	Fine Structure in Flare Soft X-ray Light Curves
262	21 September 2015 by Brian Dennis and Kim Tolbert

Flares need magnetic energy. We can now measure its arrival as Poynting flux across the solar photosphere.. Click the title to read more.
261	Photospheric Electric Fields and Energy Fluxes in the Eruptive Active Region NOAA 11158
261	14 September 2015 by Maria Kazachenko

General-relativistic corrections to RHESSI source positions. Click the title to read more.
260	RHESSI and General Relativity
260	7 September 2015 by Bill Thompson and Hugh Hudson

A basic return-current model matches RHESSI hard X-ray spectra and implies a need for anomalous resistivity. Click the title to read more.
259	Return-current Model Spectra and Enhanced Plasma Resistivity
259	31 August 2015 by Meriem Alaoui and Gordon Holman

Cosmic rays measure the coronal magnetic field at the PFSS source surface itself. Click the title to read more.
258	High Energies in the Inner Heliosphere
258	24 August 2015 by Hugh Hudson

The ONSET facility in Yunnan observes an interesting flare event. Click the title to read more.
257	A Two-ribbon White-light Flare Associated with a Failed Solar Eruption
257	13 July 2015 by Xin CHENG

A GOES soft X-ray burst lasting less than one minute - with hard X-rays and white-light continuum. Click the title to read more.
256	The Fastest Flare
256	29 June 2015 by Hugh Hudson and Paulo Simões

Photospheric vertical currents linked to sites of electron acceleration in the corona. Click the title to read more.
255	High-energy Electrons and Electric Currents during a Flare
255	22 June 2015 by Sophie Musset, Nicole Vilmer and Véronique Bommier

Researching the properties of Kepler's solar-type superflare stars. Click the title to read more.
254	High Dispersion Spectroscopy of solar-type superflare stars
254	8 June 2015 by Yuta Notsu

Flare energies 10-1000 times those of the most powerful solar flares. Click the title to read more.
253	"Superflares" on solar-type stars observed with Kepler
253	1 June 2015 by Hiroyuki Maehara

A recent gamma-ray flare observed with Owens Valley microwave imaging spectroscopy. Click the title to read more.
252	EOVSA Coverage of a Recent Gamma-Ray Flare
252	11 May 2015 by Dale Gary and Gregory Fleishman

Recognizing the world’s largest X-ray detector, its ionosphere. Click the title to read more.
251	Ionospheric Effects, Flare History, and Dick Donnelly
251	27 April 2015 by Hugh Hudson and Peter Gallagher

A RHESSI X-ray flare is detected outside an active region. Click the title to read more.
250	RHESSI Detection of X-ray Emission from a Quiet-Sun Filament Eruption
250	13 April 2015 by Gordon Holman and Adi Foord

Kinking flux ropes can create flare emission, but their detection may be deceptive. Click the title to read more.
249	Soft X-ray emission in kink-unstable coronal loops‎
249	30 March 2015 by Rui Pinto, Nicole Vilmer, and Sacha Brun

Systematic microwave and mm-wave solar observations from Finland. Click the title to read more.
248	Daily solar mm-observations at Aalto University Metsähovi Radio Observatory
248	16 March 2015 by Juha Kallunki and Minttu Uunila

A total solar eclipse is coming on 2015 March 20, a good opportunity for many observatories. Click the title to read more.
247	Solar Physics during the March 2015 Solar Eclipse‎
247	9 March 2015 by Hamish Reid and Hugh Hudson

The Glasgow Callisto telescope observes rare type II bursts without CME drivers. Click the title to read more.
246	Glasgow Callisto and CMEless type II bursts
246	16 February 2015 by Peter Wakeford and Hugh Hudson

Sorting out nonthermal distributions via HYDRAD models. Click the title to read more.
245	Flare Heating by Mildly Non-thermal Particles
245	26 January 2015 by Jeffrey Reep

Electron distribution functions in coronal sources. Click the title to read more.
244	Above-the-Looptop Sources
244	12 January 2015 by Mitsuo Oka and Säm Krucker

Standardized names for flares help a lot. Click the title to read more.
243	The IAU Solar Target Identifier - A Good Thing
243	29 December 2014 by Hugh Hudson and John Leibacher

The type III radio bursts echo the pattern of flare energy release. Click the title to read more.
242	The Low-High-Low Starting Frequency Trend in Groups of Type III Bursts
242	23 December 2014 by Hamish Reid

X-raying the mass distribution at the limb of the Sun: the true solar radius. Click the title to read more.
241	The Solar X-ray Limb II
241	24 November 2014 by Marina Battaglia and Hugh Hudson

Active region 2192 has returned as 2209, still no CMEs. Click the title to read more.
240	Back from the Far Side
240	17 November 2014 by Hugh Hudson and Greg Slater

Active region 2192 produced many huge flares, but no CMEs. Click the title to read more.
239	A Record-Setting CMEless Flare
239	27 October 2014 by Sam Freeland and Greg Slater

Kappa distributions may form naturally in certain flare environments. Click the title to read more.
238	The Formation of Kappa Distributions in Solar Flares
238	13 October 2014 by Nicolas Bian and Duncan Stackhouse

For the first time we have clear and direct observations of the Balmer continuum, from space. Click the title to read more.
237	The Balmer continuum observed from IRIS!
237	29 September 2014 by Petr Heinzel and Lucia Kleint

The Poynting flux responsible for coronal heating may have been spotted. Click the title to read more.
236	Energy goes up... but doesn't come back down! Coronal heating?
236	22 September 2014 by Brian Welsch

A new Browser feature helps to answer this question. Click the title to read more.
235	Which detectors can I use to analyze this flare?
235	15 September 2014 by Brian Dennis and Kim Tolbert

Back to normal, the anneal was a success. Click the title to read more.
234	RHESSI Resumes Observations
234	1 September 2014 by Albert Shih and Säm Krucker

Faint emission at flare-like temperatures in a large coronal area. Click the title to read more.
233	EUNIS Sees Pervasive Faint Fe XIX Emission: Evidence for Nanoflare Heating
233	18 August 2014 by Jeff Brosius

A new characteristic marker of reconnection. Click the title to read more.
232	Octupolar out-of-plane magnetic field structure generation during magnetic reconnection
232	11 August 2014 by Jan Graf von der Pahlen and David Tsiklauri

A wonderful flare observed by a grand set of instruments, including IRIS and IBIS. Click the title to read more.
231	Flare Observed by a Dozen Instruments
231	28 July 2014 by Lucia Kleint and Kevin Reardon

Describing what we know about the dominant energy driving a solar flare. Click the title to read more.
230	The Redistribution of Nonthermal Electron Energy
230	14 July 2014 by Ryan Milligan

A fourth repair job for RHESSI, smoothing out radiation damage. Click the title to read more.
229	RHESSI is Annealing Now
229	7 July2014 by Albert Shih and Martin Fivian

Pairs of flares. Click the title to read more.
228	Mysteries of Flare/CME Initiation
228	8 June 2014 by Shaun Bloomfield and Hugh Hudson

Exciting new solar high-energy observations. Click the title to read more.
227	Solar Cosmic Rays, Neutrons, and Fermi Gamma-Rays
227	24 May 2014 by Hugh Hudson and Alec MacKinnon

Torus instability and slipping reconnection. Click the title to read more.
226	The 3D standard model for eruptive flares‎
226	10 May 2014 by Miho Janvier

A flare analysis making use of the new GX Simulator modeling software. Click the title to read more.
225	Microwave Images of a Single-Loop Flare: Observations and Simulations
225	28 April 2014 by Alexey Kuznetsov and Eduard Kontar

Wrinkles in the FIP effect for flares. Click the title to read more.
224	Abundances in Solar Flares
224	21 April 2014 by Harry Warren

Representing the spectral energy distribution of a flare. Click the title to read more.
223	Homing in on Flare Energy
223	14 April 2014 by Hugh Hudson and Ryan Milligan

How our mental images may relate to what's really going on. Click the title to read more.
222	Empirical Constructs and Cartoons
222	24 March 2014 by Forrest Mozer and Hugh Hudson

Time-series imaging spectroscopy in a B8 flare. Click the title to read more.
221	Imaging Quasi-Periodic Oscillations in a Simple Flare‎
221	17 March 2014 by Zongjun Ning and Hugh Hudson

There have been quite a few Cycle 24 X-class flares, and this was one of the nicest. Click the title to read more.
220	A Wonderful Cycle 24 Flare
220	3 March 2014 by Säm Krucker and Hugh Hudson

Let's look at the derivative. Click the title to read more.
218	Instantaneous Flare Properties
218	10 February 2014 by Hugh Hudson

A homologous series of global coronal waves reflects at a coronal-hole boundary. Click the title to read more.
217	Reflection of Coronal Global Waves
217	13 January 2014 by Ines Kienreich and Hugh Hudson

Thermal collapse in flare loops seen in a wonderful new way. Click the title to read more.
216	Flare Coronal Rain
216	23 December 2013 by Hugh Hudson and Säm Krucker

Focusing optics to explore the high-energy Sun. Click the title to read more.
215	The HEROES Mission: High Energy Replicated Optics to Explore the Sun
215	16 December 2013 by Steven Christe and Albert Shih

Stellar flares and CMEs behave like solar ones. Click the title to read more.
214	CMEs on young, solar-type stars
214	9 December 2013 by Alicia Aarnio

Assessing the greatest space-weather events over the centuries. Click the title to read more.
213	The 1859 Space Weather Event Revisited
213	25 November 2013 by Ed Cliver

The behavior of conjugacy in flare footpoints. Click the title to read more.
212	Hard X-ray Footpoint Asymmetry
212	7 November 2013 by Ya-Hui YANG

Flares bunch up strikingly. Click the title to read more.
211	The Halloween Flares and Large-Scale Correlations
211	28 October 2013 by Richard Schwartz and Hugh Hudson

Linear polarization produced by anisotropy, rather than particle-beam impact. Click the title to read more.
210	Scattering Polarization in Solar Flares
210	21 October 2013 by Jiři Štěpán and Petr Heinzel

A long-forgotten Masuda flare reappears. Click the title to read more.
209	The Flare that Time Forgot
209	13 October 2013 by Paulo Simöes and Hugh Hudson

Tutorial on flare thermal sources seen in microwaves. Click the title to read more.
208	The Post-Burst Increase
208	30 September 2013 by Hugh Hudson

Reconciling reconnection with high preflare coronal densities. Click the title to read more.
207	Peristaltic Shocks: a model
207	16 September 2013 by Dana Longcope and Roger Scott

Negative microwave bursts happen, in association with flares and "Hyder flares," and modern instrumentation makes them very interesting again. Click the title to read more.
206	Negative Microwave Bursts
206	3 September 2013 by Victor Grechnev and Hugh Hudson

Independent constraints on the densities of ions and non-thermal electrons reveal bulk acceleration. Click the title to read more.
205	Acceleration-region Densities
205	6 August 2013 by Säm Krucker and Marina Battaglia

The flare implosion originates in the lower atmosphere and involves GOES soft X-rays. Click the title to read more.
204	Implosion and Oscillation
204	29 July 2013 by Paulo Simões and Hugh Hudson

Earmarks of widespread energetic events in the solar atmosphere. Click the title to read more.
203	Minoflares
203	1 July 2013 by Iain Hannah and Hugh Hudson

An event from far behind the solar limb, observed at Mars. Click the title to read more.
202	Mars Odyssey/HEND and RHESSI
202	9 June 2013 by Vadim Vybornov and Michael A. Livshits

A novel test of the thick-target model. Click the title to read more.
201	Hard X-rays in Descent
201	27 May 2013 by Aidan O'Flannagain, John Brown and Peter Gallagher

Too few electrons in the footpoints; too many electrons in the corona. Click the title to read more.
200	Too few? Too many?
200	13 May 2013 by Paulo Simões and Eduard Kontar

A wonderfully bright gamma-ray burst at Z = 0.34. Click the title to read more.
199	A huge gamma-ray burst
199	6 May 2013 by David Smith and André Csillaghy

RHESSI observations explore structural changes in flaring loops. Click the title to read more.
198	Three-phase life leads to corpulent X-ray loops
198	15 April 2013 by Natasha Jeffrey and Eduard Kontar

Flares on a solar diameter suggest a new subatomic particle. Click the title to read more.
197	Antipodal Flares
197	1 April 2013 by B. Pecos and B. Paul

Coronal particle acceleration marks the eruption of a SEE. Click the title to read more.
196	Observational evidence for breakout reconnection
196	18 March 2013 by Henry Aurass and Gordon Holman

A "Burst-on-Tail" (BOT) phenomenon. Click the title to read more.
195	Burst-on-Tail (BOT)
195	4 March 2013 by Alex Struminsky and Ivan Zimovets

Can wave-particle interactions solve the electron number problem?. Click the title to read more.
194	Electron re-acceleration and HXR emission
194	18 February 2013 by Heather Ratcliffe and Marian Karlický

New VLA capability for imaging spectroscopy shows several remarkable features of type III bursts. Click the title to read more.
193	Passages of Electron Beams
193	11 February 2013 by Bin Chen and Tim Bastian

A simpler function fits both thermal and nonthermal RHESSI spectral ranges. Click the title to read more.
192	Kappa Distribution
192	21 January 2013 by Mitsuo Oka

New software allows RHESSI to study rapid time variations. Click the title to read more.
191	Hard X-ray Spikes Observed by RHESSI
191	7 January 2013 by Jiong Qiu

An anomalous change in flare productivity per active region. Click the title to read more.
190	Flare Productivity
190	27 December 2012 by Hugh Hudson and Lyndsay Fletcher

The FOXSI rocket soars, and a flare occurs on schedule. Click the title to read more.
189	FOXSI Success
189	27 December 2012 by Lindsay Glesener and Säm Krucker

A simplifying paradigm may describe acceleration to the highest energies in flares. Click the title to read more.
188	"Impulse Response Flares" and Gamma Rays
188	13 November 2012 by Stephen White and Hugh Hudson

The Glasgow Callisto radio observatory is on line. Click the title to read more.
187	Glasgow Callisto optimistic: first light comes in focus
187	29 October 2012 by Heather Ratcliffe and Eduard Kontar

RHESSI observes the photosphere with exquisite precision. Click the title to read more.
186	Photospheric Temperature Gradient
186	22 October 2012 by Martin Fivian and Hugh Hudson

Where the flare energy comes from, and where it goes to.. Click the title to read more.
185	Energy Partition in Large Solar Eruptive Events
185	5 October 2012 by Gordon Emslie and Brian Dennis

RHESSI sees many, many gamma-ray flashes from lightning. Click the title to read more.
184	New TGFs Found in the RHESSI Data
184	10 September 2012 by Thomas Gjesteland and Nikolai Østgaard

The Catalog is a powerful and easy-to-use access tool for the RHESSI flare observations. Click the title to read more.
183	The RHESSI Flare Catalog
183	29 August 2012 by Jim McTiernan and Hugh Hudson

RHESSI catches gamma-ray bursts, and they come in three flavors. Click the title to read more.
182	RHESSI Catches Gamma-Ray Bursts
182	15 August 2012 by Jakub Ripa

Direct electron mapping teaches us about the structure of electron acceleration in flares. Click the title to read more.
181	Dense Loop Flares
181	6 August 2012 by Jingnan Guo and Gordon Emslie

A flare with an exceptionally slow rise phase, more than 5 hours in GOES 1-8 A soft X-rays. Click the title to read more.
180	The Slowest Flare
180	23 July 2012 by Sam Freeland and Hugh Hudson

Coronal disruptions reveal themselves as depletions and gamma-ray emissions. Click the title to read more.
179	Dimmings and Sustained Gamma-Ray Events
179	25 June 2012 by Hugh Hudson and Nicola Omodei

The Flare Nimbus, its history and significance. Click the title to read more.
178	Flare Nimbus
178	14 June 2012 by Susan McKenna-Lawlor

RHESSI prepares for the June 5/6 Venus transit. Click the title to read more.
177	RHESSI and the Transit of Venus I
177	1 June 2012 by Hugh Hudson and Martin Fivian

Density-diagnostic line ratios in EVE spectra. Click the title to read more.
176	Time Profiles of Solar Flare Densities
176	21 May 2012 by Ryan Milligan and Michael Kennedy

The statistics of SEP electrons. Click the title to read more.
175	Solar energetic electron events over one solar cycle
175	7 May 2012 by Linghua Wang

The properties of global coronal waves sorted out. Click the title to read more.
174	A Shocking Type II
174	30 April 2012 by Hazel Bain, Säm Krucker and Lyndsay Glesener

Flare gold at the foot of the rainbow. Click the title to read more.
173	RHESSI and IRIS
173	16 April 2012 by Hugh Hudson

Soon, true microwave imaging spectroscopy. Click the title to read more.
172	A New Day Dawns
172	26 March 2012 by Dale Gary

Iron everywhere in the EVE spectra. Click the title to read more.
171	An Fe Cascade
171	12 March 2012 by Hugh Hudson

Slow waves, QPPs, and hard X-rays. Click the title to read more.
170	Do slow waves trigger pulsations in two-ribbon flares? An observational search‎
170	27 February 2012 by A. Inglis and B. Dennis

On RHESSI's tenth, a top-ten discovery list. Click the title to read more.
169	RHESSI's Tenth Anniversary
169	15 February 2012 by B. Dennis and R. Lin

A re-interpretation of the famous SAD tadpoles. Click the title to read more.
168	Supra-Arcade Downflows
168	23 January 2012 by S. Savage and D. McKenzie

The flare EUV continua now routinely observed. Click the title to read more.
167	Flare Observations of the EUV Continua
167	16 January 2012 by R. Milligan

An amazing sungrazing comet, but not detectable at high energies. Click the title to read more.
166	No Hard X-rays from Comet Lovejoy
166	19 December 2011 by H. Hudson and P. Saint-Hilaire

Spatial distribution of X-ray polarization, and its implications. Click the title to read more.
165	Modelling spatially resolved X-ray polarization
165	12 December 2011 by N. Jeffrey and E. Kontar

Analysis of the huge energies of loop-top sources in flares. Click the title to read more.
164	Slowly but surely towards the huge amount of energy II
164	28 November 2011 by S. Kołomański and T. Mrozek

Strikingly precise correlations of H-alpha kernels and hard X-ray bursts. Click the title to read more.
163	X-ray and H-alpha Flare Impulses
163	14 November 2011 by K. Radziszewski and P. Rudawy

The energetics of "slow LDEs". Click the title to read more.
162	Slowly but surely towards the huge amount of energy I
162	31 October 2011 by Urszula Bąk-Stęślicka and Tomasz Mrozek, Sylwester Kołomański

Dealing with red noise. Click the title to read more.
161	Quasi-Periodic Pulsations: Fermi/GBM Results
161	24 October 2011 by David Gruber and Pawel Lachowicz

Solar astrometry in 3D. Click the title to read more.
160	A Flare in 3D
160	10 October 2011 by Hugh Hudson and Juan Carlos Martinez Oliveros

Seven X-class flares already in 2011. Click the title to read more.
159	Solar Max Arrives
159	28 September 2011 by Hugh Hudson and Richard Schwartz

Reconnection late in a flare. Click the title to read more.
158	Two-stage SEE Shows Reconnection
158	8 September 2011 by Yang Su and Brian Dennis

Inverse Compton radiation - gaining momentum. Click the title to read more.
157	Scattered Light: Inverse Compton Scattering and Coronal Hard X-ray Sources
157	17 August 2011 by B. Chen and T. S. Bastian

A first - the relative height of hard X-ray and white-light flare sources. Click the title to read more.
156	X-ray, EUV & WL emission heights observed by RHESSI & SDO
156	24 July 2011 by Marina Battaglia and Eduard Kontar

A hard X-ray spike elicits a sympathetic response. Click the title to read more.
155	Hard X-rays and Sympathy
155	13 July 2011 by Hugh Hudson

Microflares too have powerful particle acceleration. Click the title to read more.
154	Suzaku Microflares
154	30 June 2011 by S. Ishikawa

Strong hard X-rays and weak soft X-rays - breaking the paradigm?. Click the title to read more.
153	Acceleration without Heating
153	13 June 2011 by G. Fleishman & E. Kontar

Imaging spectroscopy in the EUV, at AIA resolution. Click the title to read more.
152	DIY spectroscopy: Analyzing AIA diffraction patterns
152	30 May 2011 by C. L. Raftery & S. Krucker

The Neupert Effect works, sort of, in a limb gamma-ray flare. Click the title to read more.
151	EVE/ESP and the Neupert Effect
151	9 May 2011 by H. Hudson

Radio pulsations may illuminate a strongly non-radial current sheet. Click the title to read more.
150	Decimetric pulsations and coronal X-ray sources
150	18 April 2011 by A. Benz, M. Battaglia, and N. Vilmer

Flare effects in sunspot umbrae. Click the title to read more.
149	The Alfven Speed above a Sunspot, and Gamma-rays
149	12 April 2011 by H. Hudson and L. Fletcher

{

Wave dynamics explains arcade development. Click the title to read more.
148	Slow Magnetoacoustic Waves in Two-Ribbon Flares
148	17 March 2011 by V. Nakariakov and I. Zimovets

An X-class flare - and a sunquake. Click the title to read more.
147	First Sunquake of Solar Cycle 24 Observed by Solar Dynamics Observatory
147	7 March 2011 by A. G. Kosovichev

A type II radio burst but no CME and introducing a new way to search for waves in SDO. (CORRECTION There is a CME!). Click the title to read more.
146	M is for Magnifique Part Deux
146	22 February 2011 by Steven Christe and Andrew Inglis

The main flare radiated energy is not in the EUV. Click the title to read more.
145	At last, the EUV Spectrum
145	8 February 2011 by Hugh Hudson

HMI sees a black-light flare (?). Click the title to read more.
144	Black and White Flares
144	24 January 2011 by Juan Carlos Martinez Oliveros and Charles Lindsey

The top ten RHESSI flares thus far. Click the title to read more.
143	The Flares of the RHESSI Monograph
143	11 January 2011 by Hugh Hudson and Gordon Emslie

Hinode and RHESSI observations strain the credibility of the thick-target model. Click the title to read more.
142	Brilliant Timing
142	20 December 2010 by Säm Krucker and Hugh Hudson

RHESSI and SDO see a remarkable flare. Click the title to read more.
141	M is for Magnifique
141	6 December 2010 by Steven Christe and Andrew Inglis

Revision as of 01:38, 29 November 2017 (view source) Hhudson (Talk \| contribs) (added 312) ← Older edit		Revision as of 21:50, 26 December 2017 (view source) Schriste (Talk \| contribs) Newer edit →
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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.	+	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]]. 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.
	We welcome volunteer authors - please see our page of [http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Help:For_Authors help for authors].		We welcome volunteer authors - please see our page of [http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Help:For_Authors help for authors].

RHESSI Science Nuggets

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Revision as of 21:50, 26 December 2017

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