Distribution of Solar Flares with Respect to Associated Coronal Mass Ejection (CME) Span During 1996 to 2012

Abstract

In the present study we have selected 131 events of the flare-CME accompanied by type II radio burst chosen during the period from 1996 to 2012. Statistical analyses are performed to examine the distribution of solar flares with respect to CME span and it was found that from 131 events only 49 lie under the CME span, whereas 82 events are outside the CME span. Our analysis indicates that flare-CME accompanied by type II radio burst does not follow the CSHKP flare-CME model. Under the CME span, 57% events occurred in the northern region and 43% events in the southern region, whereas outside the CME span 51% events occurred in the northern region and 49% events in the southern region. The northern and southern hemispheres between 10 to 20o latitudinal belts are found to be more effective in producing events. We also found that under the CME span the maximum number of events resided at the center, and outside the CME span all the 82 events spread out to one particular side.