RHESSI Science Nuggets

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|title = The Jakimiec Track
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|number = 96
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|first_author = Hugh Hudson
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|second_author = Fabio Reale
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|publish_date = 2 March 2009
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|description = A recent re-analysis of the relationship between emission measure and temperature in flares stimulates this new nugget.
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|image = icon96.png
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}}
{{Nugget Badge
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Revision as of 06:07, 3 March 2009

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. If you are looking for older Nuggets than please visit the old RHESSI Science Nuggets and use the search facilities there; for Nuggets in the Wiki format, use your browser's search facility for title words or authors.


96 The Jakimiec Track
2 March 2009 by Hugh Hudson Fabio Reale
Icon96.png
A recent re-analysis of the relationship between emission measure and temperature in flares stimulates this new nugget.. Click the title to read more.
95 Coronal implosion
16 February 2009 by Rui Liu
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Though we expect flare implosions, we frequently observe explosions (i.e. eruptions). In this nugget, an observation of a contracting flare is described and analyzed.. Click the title to read more.
94 Other Discoveries from Carrington's Flare
2 February 2009 by Hugh Hudson
link=Other Discoveries from Carrington%27s Flare
During the sesquicentennial of the Carrington flare, let us not forget how "Space Weather" got its start.. Click the title to read more.
93 Collapsing Traps
21 January 2009 by Boris Somov and Hugh Hudson
Icon93.jpg
Large-scale plasma motions, as in magnetic reconnection, can directly accelerate high-energy particles.. Click the title to read more.
92 RHESSI Simulations of Complicated Flares
5 January 2009 by Lyndsay Fletcher and Jim McTiernan
Icon92.jpg
Comparing RHESSI images with ones simulated from TRACE "white light" reveals striking similarities but intriguing differences.. Click the title to read more.
91 Cycle 24
22 December 2008 by Hugh Hudson and Steven Christe
Icon91.png
Solar cycle 24 seems to be delayed. Where are the spots? This Nugget discusses the problem and reviews the recent Solar24 meeting, the first in our field to be Wikified.. Click the title to read more.
90 Inverse Compton X-rays from relativistic flare leptons
1 December 2008 by Alec MacKinnon and Procheta Mallik
Icon90.jpg
Compton scattering makes the Sun visible at high energies, via processes related to the galactic cosmic rays. This is not your ordinary Bremsstrahlung.... Click the title to read more.
89 The Rise and Fall of The Low Energy Cut Off
17 November 2008 by Ewan Dickson and Eduard Kontar
Icon89.png
Solar hard X-rays tend to have a power-law distribution in energy, implying infinite photon numbers at low energy (a "soft X-ray catastrophe"). Can we observe what limits this behavior?. Click the title to read more.
88 SEPs Link not Confirmed
3 November 2008 by Gerry Share and Allan Tylka
Yohkoh countrate 06051998.jpg
The spectral evolution of a solar hard X-ray burst may give a clue to the acceleration of solar energetic particles (SEPs). This RHESSI Science Nugget questions the validity of this predictor.. Click the title to read more.
87 The SphinX Instrument on CORONAS-PHOTON
22 October 2008 by Janusz Sylwester and Ken Phillips
CORONAS signing.jpg
An exciting new instrument will begin observations at an exciting time.. Click the title to read more.
86 The Good Guys and the Rascals
13 October 2008 by B. Dabrowski and Arnold Benz
Icon 86.jpg
Solar decimetric radio bursts - but only the good guys - correlate well with RHESSI hard X-rays.. Click the title to read more.
85 RHESSI Optical Images
2008-09-29 by H. Jabran Zahid and Hugh Hudson
RHESSI optical images icon.png
RHESSI makes optical images as well as X-ray and gamma-ray ones. This Nugget explains how.. Click the title to read more.
84 Flare Plasma Abundances - New X-ray Observations
2008-09-15 by Brian Dennis and Richard Starr
Icon 84.jpg
MESSENGER is now exploring Mercury. It is also helping RHESSI to understand the solar X-ray spectrum and measure elemental abundances in flares.. Click the title to read more.
83 [[Hard X-rays from a Jet?]]
2008-08-27 by Hazel Miller Bain and Lyndsay Fletcher
link=Hard X-rays from a Jet?
Observations during the rise phase of a M5.4 flare suggests that hard x-rays may be associated with a jet observed by TRACE.. Click the title to read more.
82 [[Are Stellar Flares like Solar Flares?]]
2008-08-11 by Hugh Hudson and Beate Stelzer
link=Are Stellar Flares like Solar Flares?
In this nugget, we explore an extrasolar flare (aka stellar flare). These stellar and solar flares are similar but it is often in subtle differences that we may learn the most.. Click the title to read more.
81 [[The Microflare Height Distribution]]
2008-07-28 by Steven Christe and Hugh Hudson
link=The Microflare Height Distribution
Another look at microflare positions.... Click the title to read more.
80 [[The McClymont Jerk]]
2008-07-14 by Hugh Hudson and Brian Welsch
link=The McClymont Jerk
The sudden energy release of a flare in the solar atmosphere has many consequences. One of them may be the McClymont Jerk.. Click the title to read more.

For all previous Nuggets go to the old RHESSI Science Nugget Page.

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