The X-ray emission of solar flares generated by anisotropic electron beams

Details The X-ray emission of solar flares generated by anisotropic electron beams The X-ray emission of solar flares generated by anisotropic electron beams

Dec 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987azh....64.1280b&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 64, Nov.-Dec. 1987, p. 1280-1290. In Russian.

Astronomy and Astrophysics

Astronomy

4

Anisotropic Media, Electron Beams, Emission Spectra, Solar Flares, Solar Spectra, X Ray Spectra, Angular Distribution, Bremsstrahlung, Compton Effect, Energy Spectra, Polarized Radiation, Solar Limb

Scientific paper

For three types of the initial angle distribution of fast electrons, energy spectra, directivity, and polarization of the bremsstrahlung have been computed with an account for multiple scattering and energy losses. The influence of Compton scattering and of photoabsorption on the observed hard X-ray emission of solar flares has been investigated. It is obtained that the photon spectrum index depends not only on the spectrum of electrons but also on the registered energy range and on the angle of view of the flare. In the 10 - 40 keV range the spectrum is softer at the limb than in the solar disc centre; in the 60 - 360 keV the situation is reverse, the spectrum being softer in the solar disc centre.

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