Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1768962 | Advances in Space Research | 2007 | 5 Pages |
Abstract
An occulted solar flare occurred at about 06:07 UT on 2002, November 2. The RHESSI X-ray images show two separate parts. The lower part consists of a complete loop and the upper part a coronal source which well extends above the solar limb. The loop source shrank for about 3 min with a speed of â¼24 km sâ1 during the early impulsive phase and then expanded at â¼7 km sâ1, while the coronal source presented an upward motion at about 6 km sâ1. We obtained the temperature map of the loop source from RHESSI image spectrum. The temperature of the loop increases with altitude, indicating that the reconnection X-point of this flare is located above the loop source. However, the apparent coronal source is the top of another independent large-scale loop.
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Authors
Y.P. Li, W.Q. Gan,