About the onsets of closely-consecutive homologous flares
Abstract
The onsets of closely consecutive homologous flares (CCHF), which are separated by less than 6 hours and most often by about 1 hour, are compared with that of isolated flares (no flare in the region half a day before). Isolated flares appear to be formed of two components, a surging arch and a flaring arch, while a set of CCHF may be composed of consecutive elementary flares or of a series of complex ones. It is shown that the onset of eruptive flare phenomena is not the same for an isolated event and for a member of CCHF (excluding the first) as found in H-alpha and EUV observations, and probably in X-ray observations also. It is suggested that a CCHF set would become a single flare with episodic enhancement of brightness by taking account of the common H-alpha behavior of surging and flaring arches as well as the EUV emission.
- Publication:
-
Advances in Space Research
- Pub Date:
- 1982
- DOI:
- 10.1016/0273-1177(82)90186-7
- Bibcode:
- 1982AdSpR...2k.109M
- Keywords:
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- Solar Flares;
- Solar Spectra;
- Extreme Ultraviolet Radiation;
- H Alpha Line;
- Homology;
- Solar Physics