Study of Solar Decimetric Bursts with a Pair of Cutoff Frequencies

Details Study of Solar Decimetric Bursts with a Pair of Cutoff Frequencies Study of Solar Decimetric Bursts with a Pair of Cutoff Frequencies

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999spro.proc..267h&link_type=abstract

Solar Physics with Radio Observations, Proceedings of the Nobeyama Symposium, held in Kiyosato, Japan, Oct. 27-30, 1998, Edited

Physics

1

Scientific paper

We compare radio dynamic spectra with images in soft X-rays, 17 GHz microwave, and Hα, for three solar flares. We find that negative drifts of cutoff frequencies in a series of radio decimetric bursts observed in the radio dynamic spectra correspond to plasma cloud ejections seen in the images. By relating the radio frequency drift-rate to a global morphological change in the flare region, namely, a loop expansion caused by plasma cloud ejection, we discuss where the decimetric bursts are produced, in conjunction with a possible flare scenario.

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