Evidence for solar-wind charge-exchange X-ray emission from the Earth's magnetosheath

被引：0

作者：

Fujimoto, Ryuichi ^{[1
]}

Mitsuda, Kazuhisa ^{[2
]}

McCammon, Dan ^{[3
]}

Takei, Yoh ^{[2
]}

Bauer, Michael ^{[4
]}

Ishisaki, Yoshitaka ^{[5
]}

Porter, F. Scott ^{[6
]}

Yamaguchi, Hiroya ^{[7
]}

Hayashida, Kiyoshi ^{[8
]}

Yamasaki, Noriko Y. ^{[2
]}

机构：

[1] Kanazawa Univ, Dept Phys, Kanazawa, Ishikawa 9201192, Japan

[2] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan

[3] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[4] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany

[5] Tokyo Metropolitan Univ, Dept Phys, Hachioji, Tokyo 1920397, Japan

[6] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[7] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[8] Osaka Univ, Dept Astrophys, Toyonaka, Osaka 5600043, Japan

来源：

PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT | 2007年 / 169期

关键词：

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

During the Suzaku north ecliptic pole observation of 2005 September 2-4, a long-term enhancement was observed, and the C VI 4p to 1s transition line at 459 eV was apparently detected. The observed line intensity is comparable to that of the C VI 2p to 1s line at 367 eV. This is strong evidence for the charge-exchange process. In addition, O VII, O VIII, Ne X, and Mg XI lines showed clear enhancements. There are also features in the 750-900 eV range that could be due to some combination of Fe-L lines, higher order transitions of O VIII (3p to 1s and 6p to 18), and a Ne IX line. From the correlation of the X-ray intensity with solar-wind flux on time scales of about half a day, and from the short-term (similar to 10 minutes) variations of the X-ray intensity, these lines most likely arise from solar-wind heavy ions interacting with neutral material in the Earth's magnetosheath.

引用

页码：71 / 74

页数：4

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