Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976mnras.176...15m&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 176, July 1976, p. 15-30.
Astronomy and Astrophysics
Astronomy
125
Electron Precipitation, Magnetically Trapped Particles, Solar X-Rays, X Ray Spectra, Atmospheric Models, Energy Spectra, Particle Interactions, Wave Interaction
Scientific paper
Precipitation of electrons due to collisions necessarily occurs in trap models for hard X-ray bursts, and the thick-target emission from the precipitating electrons produces an X-ray spectrum similar in intensity and spectral shape to that from the trapped electrons. Such a trap-plus-precipitation model combines attractive features and removes some of the difficulties of thick-target and simple trap models. The evolution of the trap-plus-precipitation model is amenable to an analytical description, which is presented, including inversion, to find the injection electron spectrum from the X-ray spectrum. Streaming instabilities are unlikely to be important. Resonant scattering is also probably not important for the electrons which emit most of the X-rays, but may well be important for the higher-energy electrons which generate microwave bursts.
Brown John C.
Melrose Donald B.
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