RHESSI Hard X-Ray Imaging Spectroscopy of the Large Gamma-Ray Flare of 2002 July 23
RHESSI Hard X-Ray Imaging Spectroscopy of the Large Gamma-Ray Flare of 2002 July 23
复制标题
2002 年大型伽马射线耀斑的 RHESSI 硬 X 射线成像光谱 7 月 23 日
DOI：
10.1086/378931
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
R. Lin
中科院分区：
文献类型：
--
作者：
A. Emslie;E. P. Kontar;E. P. Kontar;S. Krucker;R. Lin
本文介绍了2002年7月23日发生的大型x级耀斑的不同能量波段的reven Ramaty高能太阳光谱成像仪硬x射线图像；这些图像用于为四个突出特征中的每一个构建空间分辨的硬x射线光谱：位于日冕高处的明亮软源，位于相反极性磁区的两个局部硬脚点，显示出高度相关的通量和光谱随时间变化，以及由其他三个源边界的第三个脚点。两个相关脚点的幂律谱指数相差约0.3 ~ 0.4，这可能是电子源柱密度不同的结果。
We present Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) hard X-ray images in different energy bands for the large X-class flare of 2002 July 23; these images are used to construct spatially resolved hard X-ray spectra for each of four prominent features: a bright, soft source high in the corona, two localized, hard footpoints in opposite polarity magnetic regions that show highly correlated flux and spectral variations in time, and a third footpoint bounded by the other three sources. The power-law spectral indices of the two correlated footpoints differ by ~0.3-0.4, which may be the result of differing column densities from the electron source.