Physics
Scientific paper
Oct 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976soph...50..153l&link_type=abstract
Solar Physics, vol. 50, Sept.-Oct. 1976, p. 153-178.
Physics
242
Electromagnetic Radiation, Particle Acceleration, Solar Atmosphere, Solar Flares, Solar Radiation, Gamma Rays, High Energy Electrons, Plasma-Particle Interactions, Proton Energy, Shock Wave Propagation, Stellar Mass Ejection, X Rays
Scientific paper
The paper examines the significance of particle acceleration processes in large solar flares, and the importance of accelerated particles in the generation of other flare phenomena. Comprehensive observations of the August 1972 series of large flares were used to obtain quantitative estimates of the energetic particle populations, the electromagnetic emissions, and the mass ejections. The fluxes of energetic electrons and protons were derived from observed X-ray and gamma-ray emissions, respectively. The energy input into the solar atmosphere from the collisional losses of these energetic particles is computed as a function of overlying column density, under the assumption that particles are accelerated at a point high in the solar atmosphere and then precipitate down to denser layers. The flash phase radiation, soft X-ray flare plasma, and the interplanetary shock wave can be consistently and quantitatively explained as a result of the interaction of nonrelativistic electrons with the solar atmosphere.
Hudson Hugh S.
Lin Robert P.
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