Statistical Study of Solar Flare Hard X-ray Spectra

Details Statistical Study of Solar Flare Hard X-ray Spectra Statistical Study of Solar Flare Hard X-ray Spectra

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spd....40.1901a&link_type=abstract

American Astronomical Society, SPD meeting #40, #19.01; Bulletin of the American Astronomical Society, Vol. 41, p.846

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a statistical study of solar flare hard X-ray spectra above 40 keV observed by the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI). At these energies, the hard X-ray emission is mostly produced by bremsstrahlung of suptrathermal electrons as the interact with the ambient plasma in the chromosphere. The observed photon spectra therefore provide diagnostics of electron acceleration processes in solar flare. We will present statistical results of broken power law fits of almost 100 flares with emission seen above 100 keV. The derived results will be compared to statistical results of electron spectra observed in interplanetary space.

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