RHESSI Observations of Solar Hard X-ray Flares and the Relative Timing of Interplanetary Type III Radio Bursts

Details RHESSI Observations of Solar Hard X-ray Flares and the Relative Timing of Interplanetary Type III Radio Bursts RHESSI Observations of Solar Hard X-ray Flares and the Relative Timing of Interplanetary Type III Radio Bursts

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsh52a0482r&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #SH52A-0482

Physics

7509 Corona, 7519 Flares, 7534 Radio Emissions, 7554 X Rays, Gamma Rays, And Neutrinos

Scientific paper

The Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) allows more detailed imaging of solar 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 a magnetic loop and colliding with the denser plasma at the footpoints, releasing hard X-rays through bremstrahlung. Interplanetary type III radio bursts are evidence of accelerated electrons leaving the Sun. We have begun a study of the temporal correlation of hard X-ray flares and interplanetary type III radio bursts to investigate the acceleration processes behind these events. The RHESSI data from February 12 through July 23 have been temporally compared with WIND/WAVES data to find correlation between hard X-ray events and interplanetary type III radio bursts. Relatively simple events with and without type III bursts have been chosen for spatial investigation. This involves making RHESSI hard X-ray (>20~keV) images and overlaying these onto corresponding EUV images from EIT and TRACE and images from MDI.

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