Gradual hard X-ray events and second phase particle acceleration

Details Gradual hard X-ray events and second phase particle acceleration Gradual hard X-ray events and second phase particle acceleration

Jan 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984soph...90..133k&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 90, Jan. 1984, p. 133-138.

Physics

29

Coronal Loops, Electron Acceleration, Solar Electrons, Solar Flares, Solar X-Rays, High Energy Electrons, Shock Wave Propagation, Type 2 Bursts

Scientific paper

In the second phase acceleration process the close time coincidence between the gradual hard X-ray burst and the type II shock wave is presumed due to shock acceleration of the electrons producing the gradual phase burst. The author points out that recent studies of gradual hard X-ray bursts place the source heights well below the heights of 2 - 10×105 km traversed by the shock. Gradual phase energetic electrons therefore cannot be accelerated in the shock but must be produced elsewhere. The author proposes the loop systems of long decay X-ray events as the sites of the gradual phase electron production.

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