Coronal Mass Ejections: Relationship with Solar Flares and Coronal Holes

Physics

Scientific paper

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Scientific paper

The results of an analysis of the relationship of coronal mass ejections (CMEs) with solar flares and coronal holes are presented. In the present study CME's observed by LASCO coronagraph and whose locations were identified by EIT instruments are used in the present study. The coronal holes data used in study were observed by KPNO, USA. From the study we have found that about 40% CMEs were observed when there were coronal holes within 5 degrees from the location of solar flares and 22% CMEs were observed when there were coronal holes within 10 degrees from the location of solar flares. Further, 33% CMEs were observed when there were coronal holes present within 15-25 degrees from the location of solar flares. The present work supports the view that the origin of CME's has a relationship with coronal holes in close vicinity as suggested by Verma and Pande(1989) and Verma(1998).

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