Computer Science
Scientific paper
Feb 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977izssr..41q.273s&link_type=abstract
(Mezhdunarodnyi Seminar po Aktivnym Protsessam na Solntse i Probleme Solnechnykh Neitrino, 8th, Leningrad, USSR, Sept. 25-27, 19
Computer Science
Gas Dynamics, High Temperature Plasmas, Magnetohydrodynamic Flow, Solar Flares, Solar Magnetic Field, Unsteady Flow, Atmospheric Heating, Electron Accelerators, Radiant Cooling, Satellite Observation, Solar Activity Effects, Solar X-Rays, Td-1 Satellite, Ultraviolet Radiation
Scientific paper
One-dimensional unsteady gasdynamic plasma flows in a strong magnetic field are analyzed which arise during impulsive atmospheric heating by a powerful beam of flare-accelerated electrons. A system of equations describing the chromosphere as a two-temperature gasdynamic medium is given, initial and boundary conditions are determined, and calculations are performed to obtain density, velocity, electron-temperature, and ion-temperature profiles. The numerical results are used to interpret a series of hard X-ray bursts observed by the TD-1A satellite. Temperature and depth distributions of thermal X-ray and UV emission intensity are computed as a function of time for the case of impulsive atmospheric heating by a beam of energetic electrons with a power-law spectrum, and the thermal nature of the instability leading to the formation of cold dense condensations due to radiative cooling of the hot flare plasma is clarified.
Somov Boris V.
Spektor A. R.
Syrovatskiĭ S. I.
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