Physics
Scientific paper
Oct 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ge%26ae..17..334k&link_type=abstract
(Geomagnetizm i Aeronomiia, vol. 17, Mar.-Apr. 1977, p. 334-337.) Geomagnetism and Aeronomy, vol. 17, Oct. 1977, p. 223, 224. Tr
Physics
1
Chromosphere, Particle Flux Density, Solar Cosmic Rays, Solar Flares, Solar X-Rays, Particle Acceleration, Radiant Flux Density, Satellite Observation, Time Dependence
Scientific paper
The paper investigates the temporal behavior of X-ray emission from chromospheric flares in active regions with and without preflare enhancement of particle intensity. Temporal variations of the mean amplitude of X-ray emission were studied for the events of April 29 and September 7, 1973. For this purpose, the amplitudes of all X-ray flares in each of the active regions generating solar cosmic-ray flares with proton energy exceeding 10 MeV were summed over a 24-hour period to determine the mean value of X-ray emission amplitude. It was found that in active regions, where a solar cosmic-ray flare of high energy occurs sooner or later, energy may be accumulated either without appreciable losses (particularly through the acceleration of particles to energies of several MeV) or with significant losses through particle acceleration, causing a preflare increase in the particles.
Chupova L. M.
Kuzhevskii B. M.
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