Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10694999 | Advances in Space Research | 2005 | 5 Pages |
Abstract
Hard X-ray observations from the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) of the October 29, 2003 GOES X10 two-ribbon flare are used together with magnetic field observations from the Michelson Doppler Imager (MDI) onboard SoHO to compare footpoint motions with predictions from magnetic reconnection models. The temporal variations of the velocity v of the hard X-ray footpoint motions and the photospheric magnetic field strength B in footpoints are investigated. The underlying photospheric magnetic field strength is generally higher (B â¼Â 700-1200 G) in the slower moving (v â¼Â 20-50 km sâ1) western footpoint than in the faster (v â¼Â 20-100 km sâ1) moving eastern source (â¼100-600 G). Furthermore, a rough temporal correlation between the HXR flux and the product vB2 is observed.
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Space and Planetary Science
Authors
Säm Krucker, M.D. Fivian, R.P. Lin,