Solar Flare Surges in relation to Active Prominences and Sunspots

Abstract

A study has been made of flare surges (FS) after correlating them with prominences and sunspots. Results obtained are: (i) the duration of the 88% events lies between 0-40 min; (ii) in most cases the distance between FS and filaments ranges from 0·03 R0 to 0·12R0 whereas' that between FS and sunspots ranges from 0·05R0 to 0·25R0; (iii) there are several active regions which can produce sympathetic FS; and (iv) the number of FS from a particular sunspot group is proportional to the number of X-ray flares from the same active region.