Correlative Study of X–Class X–Ray Solar  Flare and Halo Cmes Related Large  Geomagnetic Storms with Interplanetary  Magnetic Field

Puspraj Singh; Praveen Kumar Gupta; Nishant Khare; P. K. Chamadia

Volume : II, Issue : X, October - 2013

Correlative Study of X–Class X–Ray Solar Flare and Halo Cmes Related Large Geomagnetic Storms with Interplanetary Magnetic Field

Puspraj Singh, Praveen Kumar Gupta, Nishant Khare, P. K. Chamadia

Abstract :

We have studied halo coronal mass ejections and X–class X–ray solar flare related large geomagnetic storms magnitude (Dst ≤–100nT) observed during the period of 1997 to 2012 with shocks, radio bursts and Interplanetary magnetic field. We have found that the entire halo CMEs & X–class X–ray solar flare related large geomagnetic storms are associated with interplanetary shocks and the related shocks are forward shocks. Further we have concluded that halo CMEs & X–class X–ray solar flare related large geomagnetic storms are closely related to interplanetary magnetic field. Positive co–relation with correlation coefficient 0.88 has been found between magnitudes of halo CMEs & X–class X–ray solar flare related large geomagnetic storms and magnitude of change in average interplanetary magnetic field and 0.92 between magnitudes of Halo CMEs & X–class X–ray solar flare related large related large geomagnetic storms and magnitude of change in southward component of interplanetary magnetic field.