Microwave M burst on May 3 1999
نویسندگان
چکیده
We present a remarkable fine structure of “decimetric pulsation” event (DCIM), observed with the 2.60–3.80 GHz spectrometer in Beijing Astronomical Observatory on 3 May 1999; a “M” dynamic spectrum has been detected, thanks to the high time and frequency resolutions. We call this fine structure a microwave M burst and propose a plausible model which treats the observed M burst as an emission produced by the same electron beam travelling along magnetic lines and mirrored; this beam might be originally formed from the plasmoid of a type IV-DCIM burst. The M burst could be another radio evidence of the mirror effect on electron beam after the N-burst. It is the first time that such a feature has been detected in type IV-DCIM bursts.
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