Association of solar flares with coronal mass ejections accompanied by Deca-Hectometric type II radio burst for two solar cycles 23 and 24
The aim of present study is to find the association of solar flares with coronal mass ejections (CMEs) accompanied by Deca-Hectometric (DH) type II radio burst for the period 1997–2014 (solar cycle 23 and ascending phase of solar cycle 24). We have used a statistical analysis and found that 10–20∘ latitudinal belt of northern region and 80–90∘ longitudinal belts of western region of the sun are more effective for flare-CME accompanied by DH type II radio burst events. M-class flares (52%) are in good association with the CMEs accompanied by DH type II radio burst. Further, we have calculated the flare position and found that most frequent flare site is at the center of the CME span. However, the occurrence probability of all flares is maximum outside the CME span. X-class flare associated CMEs have maximum speed than that of M, C, and B-class flare associated CMEs. We have also found a good correlation between flare position and central position angle of CMEs accompanied by DH type II radio burst.
KeywordsCoronal mass ejections Solar flares Type II radio burst
Authors are thankful to IUCAA, Pune for content page service. Thankfully, Acknowledge the UGC, New Delhi for financial assistance under the MRP No. F42-825. The authors gratefully acknowledge the data support provided by various online data centers. They would like to thank Wind/WAVES team for providing DH type II catalog.