RHESSI Observations of Solar Hard X-ray Flares with and without Interplanetary Type III Radio Bursts

Details RHESSI Observations of Solar Hard X-ray Flares with and without Interplanetary Type III Radio Bursts RHESSI Observations of Solar Hard X-ray Flares with and without Interplanetary Type III Radio Bursts

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spd....34.1813r&link_type=abstract

American Astronomical Society, SPD meeting #34, #18.13; Bulletin of the American Astronomical Society, Vol. 35, p.841

Astronomy and Astrophysics

Astronomy

Scientific paper

The Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) allows more detailed imaging of hard X-ray flares than has been available before. The hard X-ray sources seen in solar flares are believed to be the result of accelerated electrons streaming down the legs of magnetic loops and colliding with the denser plasma at the footpoints, releasing hard X-rays through bremsstrahlung. Type III interplanetary radio bursts are evidence of accelerated electrons leaving the Sun. Previous studies have indicated a correlation between hard X-ray flares and type III interplanetary radio bursts for some events. We are now studying the structure of hard X-ray flares using RHESSI and TRACE (EUV) movies to investigate possible differences between flares that have corresponding radio bursts (as detected by WIND/WAVES) and ones that do not. We have collected over 600 events from the first year of RHESSI. From that group, we have chosen a half dozen events with good coverage from both instruments for more detailed study.

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