Physics
Scientific paper
Mar 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986soph..107..135w&link_type=abstract
Solar Physics, Volume 107, Issue 1, pp.135-157
Physics
6
Solar Microwave Bursts
Scientific paper
Further observations of solar microbursts by the Clark Lake radioheliograph are reported. The microbursts have properties consistent with weak type III bursts, with the implication that type III's can have brightness temperatures as low as 106K. The authors explore the importance of this result. A single model to explain the stronger type III bursts and the weaker microbursts is sought. The authors show that none of the models for stabilizing the strongest type III electron streams can explain the observed microbursts: these models have threshold levels of Langmuir waves which imply emission (due to spontaneous scattering off ions) with brightness temperatures in excess of those observed. It appears that either some vital physics is still missing from models for type III bursts, or that microbursts should have properties significantly different from those of type III bursts. In the latter case further observations should allow important tests of type III models.
Kundu Mukul R.
Szabo Andras
White Stephen M.
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