Statistical Study of X-ray Jets in the Polar Region

被引：0
|
作者：
Sako, Nobuharu [1 ]
Shimojo, Masumi [2 ]
Kitabayashi, Teruyuki [3 ]
机构：
[1] Tokai Univ, Cource Phys, Grad Sch Sci, 1107 Kitakaname, Hiratsuka, Kanagawa 2591292, Japan
[2] Nobeyama Solar Radio Observactory, Nagano 3841305, Japan
[3] Tokai Univ, Dept Phys, Kanagawa 25 91292, Japan
来源：
HINODE-3: THE 3RD HINODE SCIENCE MEETING | 2012年 / 454卷
关键词：
TELESCOPE XRT; HINODE; MISSION;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We detected 848 polar X-ray jets occurred in the north polar region, and investigated the characteristics of the jets statistically. The 470 jets of them occurred in the coronal hole. The occurrence rate of the jets in the coronal hole and the quiet region are 5.04 x 10(-12) jets/hr/km(2) and 7.66 x 10(-12) jets/hr/km(2), respectively. We derived five parameters of the polar X-ray jets. The averaged values of the parameters are 2.91 x 10(4) km for the maximum length, 4.42 x 10(3) km for the width, 608 sec for the lifetime and 180 km/sec for the apparent velocity. If we assume that the frequency distribution of the lifetime and the footpoint flare show the power-law distributions, and the index is -1.80 +/- 0.20 in the coronal hole and -1.84 +/- 0.17 in the quiet region. The frequency distribution is steeper than that of the previous works.
引用
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页码：153 / +
页数：2
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