Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991baicz..42..181o&link_type=abstract
Astronomical Institutes of Czechoslovakia, Bulletin (ISSN 0004-6248), vol. 42, no. 3, June 1991, p. 181-189.
Astronomy and Astrophysics
Astronomy
Digital Simulation, Interplanetary Medium, Radio Emission, Shock Wave Propagation, Solar Wind, Computerized Simulation, Plasma Frequencies, Prognoz Satellites
Scientific paper
The paper deals with the application of the 1D HD computer code to the simulation of the interplanetary shock wave generated on April 24, 1981. This event is simulated, in terms of density, velocity and temperature, by a pulse introduced at 18 Rs into a steady-state solar wind. The observed data were used to specify all significant parameters of the steady-state solar wind and the introduced shock wave. The short duration of the input pulse caused the shock wave to be initially highly decelerated. Special attention is given to the type II radio emission associated with this shock and measured by the Czechoslovak-Soviet experiment aboard the Prognoz-8 satellite. From the given analysis it follows that the emission is generated in front of the shock front at the blended fundamental and harmonic plasma frequency.
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