Electron beams and associated rapid fluctuations in solar flares |
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| Authors: | C S Li Q J Fu H W Li |
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| Institution: | (1) Department of Astronomy, Nanjing University, 210008 Nanjing, China;(2) Beijing Astronomical Observatory, Chinese Academy of Sciences, 100080 Beijing, China |
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| Abstract: | Recent observations show that the rapid fluctuations in radio, hard X-ray, and H 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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