Diagnostics of solar flare hard X-ray sources

Details Diagnostics of solar flare hard X-ray sources Diagnostics of solar flare hard X-ray sources

Jun 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978soph...58..139h&link_type=abstract

Solar Physics, vol. 58, June 1978, p. 139-148.

Physics

32

Bremsstrahlung, Solar Flares, Solar X-Rays, X Ray Spectroscopy, Electron Beams, High Energy Electrons, Microwave Spectra, Spectral Resolution, Spectroheliographs, X Ray Sources

Scientific paper

The dynamics of hard-X-ray-producing electron beams in solar flares can be strongly affected by the occurrence of a reverse current. The parameter diagram for a beam can be divided into three regimes, one of which is the usual thick-target case, the two others being due to two different possible consequences of the reverse current. The use of this parameter diagram as a possible diagnostic tool for solar-flare hard-X-ray sources is discussed, together with the necessary observations and their interpretation. The forthcoming Solar Maximum Mission, complemented with concurrent ground-based efforts, provides the next possibility to obtain these observations, given a good coordination of observing programs. The importance of microwave ratio observations with good temporal and spatial resolution in one dimension is stressed along with reliable spectroscopic methods to determine the density in solar-flare hard-X-ray sources.

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