Fast variations in high-energy X-rays from solar flares and their constraints on nonthermal models
Fast variations in high-energy X-rays from solar flares and their constraints on nonthermal models
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DOI：
10.1086/184408
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发表时间：
1984-12
期刊：
影响因子：
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通讯作者：
A. Kiplinger;B. Dennis;K. Frost;L. Orwig
中科院分区：
文献类型：
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作者：
A. Kiplinger;B. Dennis;K. Frost;L. Orwig
本文给出了对7000多个硬X射线太阳耀斑时间特性的定量分析结果。这些数据是用SMM卫星的硬X射线爆发光谱仪获得的。数据显示了数百个持续时间小于1 s的快速尖峰的例子。一个良好的观察到的快速尖峰的光谱进行了比较，一个详细的非热电子束模型的预测光谱，以确定电子束参数和路径长度的上限。当吸积点与厚靶之间的距离大于10的8次方cm时，理论谱与观测谱一致。它表明，如果分离是远远大于3 × 10 - 9厘米，具有高俯仰角（大于60度）的电子要么不发射或被镜像之前，他们到达的脚点。
The results of a quantitatve analysis of quantitative the temporal properties of over 7000 hard X-ray solar flares are presented. The data were obtained with the Hard X-ray Burst Spectrometer of the SMM satellite. The data reveal examples of hundreds of fast spikes with durations of less than 1 s. The spectra of a well-observed fast spike were compared with the predicted spectra of a detailed nonthermal electron beam model, in order to determine upper limits for electron beam parameters and path lengths. The theoretical spectra were found to be consistent with the observed spectra when the separation of between the accretion site and the thick target was greater than 10 to the 8th cm. It is shown that if the separation is much greater than 3 x 10 to the 9th cm, the electrons with high pitch angles (greater than 60 deg) are either not emitted or are mirrored before they reach the footpoints.