Evidence for Magnetic Reconnection in a Flare and CME Observed By RHESSI and SDO/AIA

Details Evidence for Magnetic Reconnection in a Flare and CME Observed By RHESSI and SDO/AIA Evidence for Magnetic Reconnection in a Flare and CME Observed By RHESSI and SDO/AIA

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011spd....42.2222s&link_type=abstract

American Astronomical Society, SPD meeting #42, #22.22; Bulletin of the American Astronomical Society, Vol. 43, 2011

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The double coronal X-ray sources (Sui and Holman 2003, Liu et al. 2008) observed by RHESSI are believed to be evidence for the existence of a current sheet in between. On the other hand, evidence for magnetic reconnection (inflows, outflows, flux rope, cusp, current sheet and down flows) has been reported in EUV observations. However, there are few (Liu et al. 2010, but with no RHESSI observation) that show the combined features expected from reconnection theory. We report a study of two limb flares and a related CME observed by RHESSI and SDO/AIA at 18:00 UT-21:00 UT on Mar. 08 2011. The SDO-AIA data show the formation and eruption of the flux rope (CME). The X-ray emission observed by RHESSI shows an extended source at both thermal and non-thermal energies above the flaring loop. During the two hard X-ray peaks, RHESSI images indicate a reverse Y-shape structure above the flaring loop and a Y-shape structure high in the corona. We also observe inflows between the two RHESSI coronal sources after the second peak at 18:19 UT. The flux rope erupted one hour later. Down flows were seen above the post flare loops at this time. These provide evidence for magnetic reconnection and a failed eruption, inhibited by an overlying magnetic structure in the corona at least an hour before the successful CME. We will compare the results with previous observations and flare/CME models.

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