On impulsive X-ray flares on the sun.
Abstract
In the Soviet-French SIGNE 2M experiment, the Prognoz 7 satellite and the Venera 11 and Venera 12 probes recorded impulsive solar flares at energies Ex greater than 100 keV on 1978 December 3 and 4 and 1979 April 27. The time profiles are described. For the April 27 event the X-ray intensity showed an anisotropy of roughly 20 percent. For the December 4 flare a lower limit Hmin greater than or equal to 16,000 km is placed on the height of the hard-X-ray emission site above the photosphere.
- Publication:
-
Pisma v Astronomicheskii Zhurnal
- Pub Date:
- August 1982
- Bibcode:
- 1982PAZh....8..488D
- Keywords:
-
- Solar Flares;
- Solar X-Rays;
- Spaceborne Astronomy;
- Temporal Distribution;
- Anisotropy;
- Energy Spectra;
- French Space Program;
- Prognoz Satellites;
- U.S.S.R. Space Program;
- Venera 11 Satellite;
- Venera 12 Satellite;
- Solar Physics;
- Solar Flares:X Rays