X-rays, ultraviolet radiation, and the physics of solar flares

Details X-rays, ultraviolet radiation, and the physics of solar flares X-rays, ultraviolet radiation, and the physics of solar flares

Oct 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977azh....54.1062p&link_type=abstract

Astronomicheskii Zhurnal, vol. 54, Sept.-Oct. 1977, p. 1062-1080. In Russian.

Physics

2

Solar Flares, Solar Physics, Solar X-Rays, Ultraviolet Radiation, Atmospheric Heating, Electron Beams, Particle Acceleration, Polarization Characteristics, Solar Atmosphere, Solar Magnetic Field

Scientific paper

Observations of impulsive and slow solar-flare components and of the polarization of flare X-rays are used to determine the thermal and nonthermal energy contributions as well as the characteristics of accelerated electron fluxes. The energy of an electron beam and of a high-temperature cloud produced during flares are estimated, and UV flares observed in the spectral region from 300 to 1800 A are analyzed. Heating of the lowest atmospheric layers by a heat flux and by accelerated particles is investigated, taking into account the resultant motions. The role of the magnetic field and possible modifications of flare theory necessitated by extra-atmospheric observations are briefly discussed.

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