Semi-empirical model of the white light flare on September 19, 1979.

Details Semi-empirical model of the white light flare on September 19, 1979. Semi-empirical model of the white light flare on September 19, 1979.

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993sccha..36..217f&link_type=abstract

Science in China, Series A, Vol. 36, No. 2, p. 217 - 226

Physics

1

Solar Flares: Models

Scientific paper

The intensities of the continuum emission and the Ca II Ka line of the white light flare on Sep 19, 1979 are measured and analyzed. Their variations with time are given. It is indicated that the continuum emission of this flare appeared in the early impulsive phase and lasted for about 5 - 6 min, with the time of maximum intensity 2 - 3 min earlier than that for the microwave radio burst. Based on the non-LTE theory, a semi-empirical model at a time with the continuum emission being relatively intensive is presented. The results show that the temperature in the flare photosphere is increased by 150 - 250K, and that the continuum emission is produced mainly by the negative hydrogen ion.

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