Physics-Based Analysis Using the Empirical High Accuracy Satellite Dray Model (HASD)
Final rept. 15 Jun 2002-14 Jun 2005
ALABAMA A AND M UNIV NORMAL DEPT OF PHYSICS
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In this study, we have employed a 2.5D time-dependent streamer-flux rope MHD model to investigate the role of magnetic reconnection in the CME acceleration processes. To implement this simulation, two distinct types of initial magnetic topology i.e., Inverse and Normal prominence configuration are used. The results showed The normal prominence magnetic configuration forms a current sheet in the region of leading edge of the flux-rope, thus the magnetic reconnection occurs to open the closed field of the streamer which allows the flux rope to escape to launch a fast CME as suggested by Low and Zhang 2002. On the other hand, when the initial magnetic topology in the initial prominence configuration, the magnetic reconnection occurs at trailing edge of the flux-rope. In this case, the streamer confined the flux-rope until the magnetic reconnection occurs, this confined force removed which enlaced the CME acceleration Wu et al. 2004 Both inverse and normal prominence configurations are able to produce fast CMEs.
- Electricity and Magnetism