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Results from the Study of an M7.6 Flare and its Associated CME View all abstracts by submitter

Hui Li   Submitted: 2006-12-06 18:29

An M7.6 flare was well observed on 2003 October 24 in active region 10486 by a few instruments and satellites, including GOES, TRACE, SOHO, RHESSI and NoRH. Multi-wavelength study shows that this flare underwent two episodes. During the first episode, only a loop-top source of <40 keV was observed in reconstructed RHESSI images, which showed shrinkage with a velocity of 12 - 14 km s-1 in a period of about 12 minutes. During the second process, in addition to the loop-top source, two footpoint sources were observed in energy channel of as high as ~ 200 keV. One of them showed fast propagation along one of the two TRACE 1600 {AA} flare ribbons and the 195 {AA} loop footpoints, which could be explained by successive magnetic reconnection. The associated CME showed a mass pickup process with decreasing center-of-mass velocity. The decrease of the CME kinetic energy and the increase of its potential energy lead to an almost constant total energy during the CME propagation. Our results reveal that the flare and its associated CME have comparable energy content, and the flare is of non-thermal property.

Authors: Hui Li and Youping Li
Projects: None

Publication Status: Advances in Space Research (accepted)
Last Modified: 2006-12-07 12:02
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