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.
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Ma, Y., Wang, S., Yan, Y. et al. Statistics and Analysis of Microwave Type III Bursts at Low Frequencies. Astrophysics and Space Science 279, 219–227 (2002). https://doi.org/10.1023/A:1015150523642
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DOI: https://doi.org/10.1023/A:1015150523642