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High resolution observation of Hα solar flares and temporal relation between Hα and X-ray, microwave emission

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Abstract

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: (1) Hα kernel consists of some finer bright points or Hαflare 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.

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Authors and Affiliations

  1. Kwasan and Hida Observatories, University of Kyoto, Kamitakara, Gifu, Japan

    H. Kurokawa, T. Kitahara, Y. Nakai, Y. Funakoshi & K. Ichimoto

Authors
  1. H. Kurokawa
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  2. T. Kitahara
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  3. Y. Nakai
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  4. Y. Funakoshi
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  5. K. Ichimoto
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Kurokawa, H., Kitahara, T., Nakai, Y. et al. High resolution observation of Hα solar flares and temporal relation between Hα and X-ray, microwave emission. Astrophys Space Sci 118, 149–152 (1986). https://doi.org/10.1007/BF00651119

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  • DOI: https://doi.org/10.1007/BF00651119

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