The temperature map of the loop and coronal sources of an occulted solar flare

被引：11

作者：

Li, Y. P. ^{[1
]}

Gan, W. Q. ^{[1
]}

机构：

[1] Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China

来源：

ADVANCES IN SPACE RESEARCH | 2007年 / 39卷 / 09期

基金：

中国国家自然科学基金;

关键词：

flares; X-ray and gamma-ray emission; corona;

D O I：

10.1016/j.asr.2007.04.009

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

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 similar to 24 km s(-1) during the early impulsive phase and then expanded at similar to 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. (C) 2007 COSPAR. Published by Elsevier Ltd. All rights reserved.

引用

页码：1389 / 1393

页数：5

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