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Magnetic Structures of Solar Active Regions, Full Halo Coronal Mass Ejections, and Geomagnetic Storms View all abstracts by submitter

Yang Liu   Submitted: 2006-06-16 10:44

We have analyzed 3 active regions to investigate the relationship between magnetic configurations of active regions and geomagnetic storms. Each active region was associated with multiple full halo coronal mass ejections (CMEs). This study demonstrates that, although full halo CMEs may originate from the same active region, it is not necessary for them to have similar geoeffectiveness, depending on the magnetic configurations actually involved in the corresponding flare activities. This implies that (1) the flares, CMEs and geomagnetic storms are closely related magnetically, as already suggested by many others, and (2) the occurrence of solar active region-related geomagnetic storms may be determined by the magnetic fields which are involved in the corresponding solar flares. These associations suggest ways to improve geomagnetic storm prediction.

Authors: Y. Liu, D. F. Webb, X. P. Zhao
Projects: None

Publication Status: ApJ in press 2006
Last Modified: 2006-06-16 11:07
Go to main E-Print page  RHESSI Observations of the Solar Flare Iron-Line Feature at 6.7 keV  The 2003 October-November Fast Halo Coronal Mass Ejections and the Large-Scale Magnetic Field Structures  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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