Downward shift of the acceleration/injection region during solar flares
Abstract
Simultaneous observations of impulsive hard X-rays and type III radio bursts associated with two recent solar flares have been analyzed in order to study the characteristic increase in the starting frequency of fast-drift type III bursts during the impulsive phase. The time variation of the starting frequency has been found to be similar to that of approximately 35 keV X-rays, especially during the increasing phase. A similar variation has been observed for the low frequency cutoff of these bursts. The observations are consistent with a systematic downward shift of the electron acceleration/injection region during the impulsive phase of a solar flare.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 1981
- DOI:
- 10.1086/183628
- Bibcode:
- 1981ApJ...248L..77K
- Keywords:
-
- Electron Acceleration;
- Solar Electrons;
- Solar Flares;
- Solar X-Rays;
- Type 3 Bursts;
- Chromosphere;
- Electron Density (Concentration);
- High Energy Electrons;
- Plasma Waves;
- Shock Waves;
- Solar Corona;
- Solar Magnetic Field;
- Solar Physics