High Resolution Observation of Hα Solar Flares and Temporal Relation Between Hα and X-ray, Microwave Emission
We studied the evolutional characteristics of fine structures in Hα flare emitting regions and their relation to X-ray and microwave emissions for selected events observed with the 60 cm Domeless Solar Telescope at Hida Observatory, University of Kyoto. The principal conclusions of this investigation are: (l)Hα kernel consists of some finer bright points or Hα flare points whose individual size is less than 1 arc sec. (2) Impulsive brightnenings of Hα flare points occurred simultaneously with the spikes of the hard X-ray and microwave bursts within the time resolution of our Hα observations which varied from 1 to 10 s. (3) It is concluded that fast electron beams must be the principal mechanism of heating Hα flares during the impulsive phase of a flare.
KeywordsSolar Phys Solar Flare Bright Point Impulsive Phase Microwave Emission
Unable to display preview. Download preview PDF.
- Craig, I. J. D.: 1981, in E. R. Priest (ed.), Solar Flare Magnetohydrodynamics, Gordon and Breach Science Publishers, New York, p. 277.Google Scholar
- Kurokawa, H., Takakura, T., and Ohki, K.: 1985, Puhl Astron. Soc. Japan (submitted).Google Scholar
- Kurokawa, H. and Kanno, M.: 1982, Proceedings of the HINOTORI Symposium on Solar Flares, Tokyo, p. 199.Google Scholar