Statistical Evidence for Sympathetic Flares
Statistical Evidence for Sympathetic Flares
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DOI：
10.1086/340945
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发表时间：
2002-07
期刊：
影响因子：
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通讯作者：
Y. moon;G. Choe;Y. Park;Haimin Wang;P. Gallagher;J. Chae;H. Yun;P. Goode
中科院分区：
文献类型：
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作者：
Y. moon;G. Choe;Y. Park;Haimin Wang;P. Gallagher;J. Chae;H. Yun;P. Goode
交感耀斑是一对几乎同时发生在不同活动区域的耀斑，不是偶然的，而是因为某种物理连接。本文提出了交感耀斑存在的统计证据。从GOES的X射线耀斑数据中，我们收集了48对几乎同时发生的耀斑，它们的位置信息和Yohkoh软X射线望远镜的图像是可用的。为了选择可能有交感耀斑的活动区，我们估计了38个活动区对的实际耀斑重叠时间与随机符合重叠时间的比值R。然后，我们比较了两组不同的活动区域对（R > 1和R 1）的等待时间分布。这是第一次发现如此强有力的统计证据来证明交感耀斑的存在。为了检验相互连接的冕环的作用，我们还对R > 1群的两个子群进行了同样的分析：一个有相互连接的X射线环，另一个没有。我们没有发现任何统计学证据表明，亚组与互连冠状环更容易产生交感耀斑比亚组没有。对于具有环的子群，我们发现交感耀斑更倾向于具有跨赤道环的活动区对。
Sympathetic flares are a pair of flares that occur almost simultaneously in different active regions, not by chance, but because of some physical connection. In this paper statistical evidence for the existence of sympathetic flares is presented. From GOES X-ray flare data, we have collected 48 pairs of near simultaneous flares whose positional information and Yohkoh soft X-ray telescope images are available. To select the active regions that probably have sympathetic flares, we have estimated the ratio R of actual flaring overlap time to random-coincidence overlap time for 38 active region pairs. We have then compared the waiting-time distributions for the two different groups of active region pairs (R > 1 and R 1. This is the first time such strong statistical evidence has been found for the existence of sympathetic flares. To examine the role of interconnecting coronal loops, we have also conducted the same analysis for two subgroups of the R > 1 group: one with interconnecting X-ray loops and the other without. We do not find any statistical evidence that the subgroup with interconnecting coronal loops is more likely to produce sympathetic flares than the subgroup without. For the subgroup with loops, we find that sympathetic flares favor active region pairs with transequatorial loops.