Statistics and Analysis of Microwave Type III Bursts at Low Frequencies |
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| Authors: | Yuan Ma Shulan Wang Yihua Yan Qijun Fu |
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| Institution: | (1) Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming Yunnan, 650011, P.R. China;(2) National Astronomical Observatories, Chinese Academy of Sciences (NAOCAS), P.R. China;(3) Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing, 100080 |
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| Abstract: | 68 groups of type III bursts recorded with the dynamic spectrograph (from1 to 2 GHz) at the Beijing Astronomical Observatory
are statistically analyzed in this present article, with the frequency drift, duration, bandwidth and polarization of each
of these events being analyzed in detail. These observational features are different from those of metric, decimetric and
microwave high frequency type III bursts, showing that there possibly exist transition phenomena in the microwave low frequency
band and the microwave type III bursts at low frequencies are possibly produced by the harmonic plasma radiation caused by
nonthermal electronic beams and by the electron gyro-maser radiation.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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