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Title:
The temperature map of the loop and coronal sources of an occulted solar flare
Authors:
Li, Y. P.; Gan, W. Q.
Affiliation:
AA(Purple Mountain Observatory, Nanjing 210008, China. Corresponding author.), AB(Purple Mountain Observatory, Nanjing 210008, China. Corresponding author.)
Publication:
Advances in Space Research, Volume 39, Issue 9, p. 1389-1393. (AdSpR Homepage)
Publication Date:
00/2007
Origin:
ELSEVIER
DOI:
10.1016/j.asr.2007.04.009
Bibliographic Code:
2007AdSpR..39.1389L

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 ˜24 km s‑1 during the early impulsive phase and then expanded at ˜7 km s‑1, while the coronal source presented an upward motion at about 6 km s‑1. 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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