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Evidence for an increase of the rate of rapid radio fluctuations before solar flares

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Abstract

Preflare phenomena have been analysed in 76 radio bursts observed in four frequencies (1.42, 2.13, 2.84, and 4.26 GHz). For 23 in the 76 events the rapid fluctuation rate of the radio radiation in one of the frequencies started to rise prior to the flare onsets by a time range from several minutes to tens of minutes. Three examples of the 23 events are presented in detail to demonstrate this kind of precursor.

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Authors and Affiliations

  1. Yunnan Observatory, 650011, Kunming, Yunnan, P.R. China

    R. X. Xie, Q. Song, M. Wang & G. Q. Chen

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  1. R. X. Xie
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  2. Q. Song
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  3. M. Wang
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  4. G. Q. Chen
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Xie, R.X., Song, Q., Wang, M. et al. Evidence for an increase of the rate of rapid radio fluctuations before solar flares. Sol Phys 155, 113–120 (1994). https://doi.org/10.1007/BF00670734

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  • DOI: https://doi.org/10.1007/BF00670734

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