CORONAL MASS EJECTION (CME) EVENTS IN THE ASCENDING PHASES OF SOLAR CYCLE–23 AND 24–A COMPARATIVE STUDY

Balendra Pratap Singh; Bharti Nigam; P. K. Chamadia; C. M. Tiwari

Volume : IV, Issue : V, May - 2015

CORONAL MASS EJECTION (CME) EVENTS IN THE ASCENDING PHASES OF SOLAR CYCLE–23 AND 24–A COMPARATIVE STUDY

Balendra Pratap Singh, Bharti Nigam, P. K. Chamadia, C. M. Tiwari

Abstract :

We have analyzed the coronal mass ejections (CMEs) events for the ascending phases of solar cycle–23 and 24 i.e. for the time of interval 1996–2000 and 2008–2012 respectively. According to width distribution of CMEs we have find that, halo CMEs are 3% of total in the ascending phase of solar cycle–23 but in the ascending phase of solar cycle–24 only 2% of total CMEs are halo, whereas according to speed distribution of CMEs, Coronal Mass Ejections of higher speeds i.e. >1500 km/sec are only 1% of total in the ascending phase of solar cycle–23 and in the ascending phase of solar cycle–24 only 0.32% (~ 0%) of total CMEs having speed >1500 km/ sec, but on the basis of total occurrence of CMEs in the ascending phase of solar cycle–24 (2008–2012), 63% CMEs are occurred whereas in the ascending phase of solar cycle–23 (1996–2000) only 37% CMEs are occurred.