X-ray filament with a strong 6.7-keV line in the Galactic center region

被引：3
|
作者：
Yamauchi, Shigeo [1 ]
Shimizu, Miku [1 ]
Nakashima, Shinya [2 ]
Noaukawa, Masayoshi [3 ,4 ]
Tsuru, Takeshi Go [3 ]
Koyama, Katsuji [3 ,5 ]
机构：
[1] Nara Womens Univ, Dept Phys, Nara 6308506, Japan
[2] JAXA, Inst Space & Astronaut Sci, Chuo Ku, Sagamihara, Kanagawa 2525210, Japan
[3] Kyoto Univ, Grad Sch Sci, Dept Phys, Sakyo Ku, Kyoto 6068502, Japan
[4] Kyoto Univ, Hakubi Ctr Adv Res, Sakyo Ku, Kyoto 6068302, Japan
[5] Osaka Univ, Grad Sch Sci, Dept Earth & Space Sci, Toyonaka, Osaka 5600043, Japan
来源：
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 2014年 / 66卷 / 06期
基金：
日本学术振兴会;
关键词：
Galaxy: center; ISM: individual objects (Suzaku J174400-2913); X-rays: ISM; SUPERMASSIVE BLACK-HOLE; SAGITTARIUS-A-ASTERISK; IMAGING SPECTROMETER; IRON LINE; CHARGE-INJECTION; HOT PLASMA; SUZAKU; EMISSION; GALAXY; G359.54+0.18;
D O I：
10.1093/pasj/psu122
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
An elongated X-ray source with a strong K-shell line from He-like iron (Fe XXVI) is found at (RA, Dec)(J2000.0) = (17(h)44(m)00.(s)0, -29 degrees 13'40 ''.9) in the Galactic center region. The position coincides with the X-ray thread, G359.55+0.16, which is aligned with the radio non-thermal filament. The X-ray spectrum is well fitted with an absorbed thin thermal plasma (apec) model. The best-fitting temperature, metal abundance, and column density are 4.1(-1.8)(+2.7) keV, 0.58(-0.32)(+0.41) solar, and 6.1(-1.3)(+2.5) x 10(22) cm(-2), respectively. These values are similar to those of the largely extended Galactic center X-ray emission.
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页数：6
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