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Evidence for internal tether-cutting in a flare/CME observed by MESSENGER, RHESSI and STEREO View all abstracts by submitter

Claire Raftery   Submitted: 2010-07-27 17:59

The relationship between eruptive flares and coronal mass ejections (CME) is a topic of ongoing debate, especially regarding the possibility of a common initiation mechanism. We studied the kine- matic and hydrodynamic properties of a well-observed event that occurred on 2007 December 31 using data from MESSENGER, RHESSI and STEREO, in order to gain new physical insight into the evo- lution of the flare and CME. The initiation mechanism was determined by comparing observations to the internal tether-cutting, breakout and ideal MHD models. Evidence of pre-eruption reconnection immediately eliminated the ideal MHD model. The timing and location of the soft and hard X-ray sources led to the conclusion that the event was initiated by the internal tether-cutting mechanism. In addition, a thermal source was observed to move in a downward direction during the impulsive phase of the event, followed by upwards motion during the decay phase, providing evidence for X- to Y-type magnetic reconnection.

Authors: Claire L. Raftery, Peter T. Gallagher, R. T. James McAteer, Chia-Hsien Lin, Gareth Delahunt

Publication Status: Accepted
Last Modified: 2010-07-28 04:42
Go to main E-Print page  Magnetic Non-Potentiality of Solar Active Regions and Peak X-Ray Flux of the Associated Flares  Nonlinear Force-free Modeling of Magnetic Fields in a Solar Filament  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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