The Cosmic Ray Flare of March 7, 1942

Abstract

The variation of the dynamic characteristics of the cosmic ray limb flare of March 7, 1942 based on the K/sub232/ spectroheliograms and H-alpha spectrohelioscope observations of Kodaikanal is presented. Although the flare had high flare ribbon velocities of the order of 17 km/sec. during the flash phase, with subsequent changes in its configuration, its effect on the nearby prominence was trival. The loop prominence with typical condensations and knots formed at a height of 30,000 km. above the limb and connected to the chromosphere by thin curved threads was noticed, about 1 1/2 hours after the flash phase