The Hα flare as a secondary product of a coronal instability
Abstract
The assumption that the flare originates in the corona or transition layer, is confronted with the known properties of chromospheric flares. It is concluded that the basic mode of the energy transport into chromosphere is heat conduction. Only in some flares non-thermal particles contribute to the brightening in lower atmospheric layers: electrons with energy close to 100 keV produce chromospheric bright patches, and protons above 20 MeV cause the photospheric enhancements. The particle-produced brightenings are superposed on the basic quasi-thermal flare and involve only small areas as compared with the extensive regions heated through conduction.
- Publication:
-
Solar Physics
- Pub Date:
- August 1973
- DOI:
- 10.1007/BF00152815
- Bibcode:
- 1973SoPh...31..389S
- Keywords:
-
- Flare;
- Transition Layer;
- High Electron;
- Obvious Reason;
- Secondary Product