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Electron beams and associated rapid fluctuations in solar flares

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Abstract

Recent observations show that the rapid fluctuations in radio, hard X-ray, and Hα emissions are closely associated with type III and microwave (or decimetric) bursts during the impulsive and/or preimpulsive phases of solar flares.

In order to clarify the physical processes of these observed phenomena, this paper proposes a tentative model of two acceleration regions A (source of type III bursts) and B (source of microwave or decimetric bursts) formed in the neutral sheet and at the top of a flaring loop, respectively; and also suggests that the electron beams streaming from region A and/or region B downward to the chromosphere are responsible for the rapid fluctuations in the different emissions mentioned above during the impulsive and/or pre-impulsive phases of solar flares.

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Authors and Affiliations

  1. Department of Astronomy, Nanjing University, 210008, Nanjing, China

    C. S. Li & H. W. Li

  2. Beijing Astronomical Observatory, Chinese Academy of Sciences, 100080, Beijing, China

    Q. J. Fu

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  1. C. S. Li
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  2. Q. J. Fu
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  3. H. W. Li
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Li, C.S., Fu, Q.J. & Li, H.W. Electron beams and associated rapid fluctuations in solar flares. Sol Phys 131, 337–350 (1991). https://doi.org/10.1007/BF00151642

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  • DOI: https://doi.org/10.1007/BF00151642

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