Relationship of the dynamic events in optical and radio ranges during the flares of November 9 and 10, 1979

The results of simultaneous optical and radio observations of the solar flares on November 9 and 10, 1979 are presented. It was revealed that both flares had a number of common features both in optical and in radio ranges: location of the flares in the same place of active region, the similar configuration of the flare ribbons, rather hard spectrum of impulsive microwave bursts, the unusual fire structure of type V radio burst on November 9 and of type II radio burst on November 10 in the form of narrow band elements. Such fine structure of radio emission is supposed to be connected with the existence of an orderly system of large scale loops in the corona. The differences between these flares consisted in their dynamics. The flare on November 9 had a relatively quiet evolution, while that on November 10 was accompanied by a two-component mass ejection. This ejection was followed by two shock waves in the corona which resulted in the generation of type II radio burst. (author)