Implications of RHESSI Flare Observations for Magnetic Reconnection Models

Details Implications of RHESSI Flare Observations for Magnetic Reconnection Models Implications of RHESSI Flare Observations for Magnetic Reconnection Models

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsh21c..06h&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SH21C-06

Physics

7519 Flares, 7524 Magnetic Fields, 7554 X Rays, Gamma Rays, And Neutrinos, 7835 Magnetic Reconnection

Scientific paper

The Ramaty High Energy Solar Spectroscopic Imager (RHESSI) observations of the 2002 April 15 solar flare and related flares provide compelling evidence for the formation of a large-scale, reconnecting current sheet in at least some flares. We describe the observed evolution of the April 15 flare in terms of magnetic reconnection models. We argue that the flare most likely evolved through magnetic geometries associated with super-slow reconnection (early rise phase), fast reconnection (impulsive phase), and slow reconnection (gradual phase). We also provide evidence for X-ray brightenings within the evolving current sheet, possibly induced by the tearing mode instability. This work was supported in part by the RHESSI Program and NASA's Sun-Earth Connection Program. This work would not have been possible without the dedicated efforts of the entire RHESSI team.

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