The Diffuse X-Ray Background of the Insight-HXMT/LE Telescope in the Galactic Plane
The Diffuse X-Ray Background of the Insight-HXMT/LE Telescope in the Galactic Plane
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Insight-HXMT/LE望远镜在银道面的漫射X射线背景
DOI：
10.3847/1538-4365/ac6d5f
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发表时间：
2022-06
期刊：
影响因子：
--
通讯作者：
et al.
中科院分区：
文献类型：
--
作者：
Jin Jing;Liao Jin-Yuan;Wang Chen;et al.
Accurately estimating of diffuse X-ray background (DXB) is essential for the investigation of sources in the Galactic plane observed with Insight-HXMT/LE, which is a collimated telescope in the soft X-ray energy band with a relatively large field of view. In the high-Galactic-latitude region, DXB is dominated by the cosmic X-ray background, which is almost uniform, but DXB in the Galactic plane region is more complex due to the Galactic H i absorption and the contribution of the Galactic ridge X-ray emission. This study, as a part of background estimation of LE, focuses on estimating the contribution of DXB in the Galactic plane to Insight-HXMT/LE observations. We calculate DXB confined in a region of 0° < l < 360° and ∣b∣ < 10°, where l and b denote Galactic longitude and latitude, respectively, with the first 3 yr of Galactic-plane-scanning survey data of Insight-HXMT/LE. The Galactic plane is divided into 360 × 20 small pixels (1° × 1° per pixel), and a DXB spectrum is obtained for each pixel. An indirect method is developed for the pixels of the bright source regions, which brings a systematic error of ∼10%. The systematic error brought by the satellite attitude is ∼7% on average for all the pixels in the Galactic plane. The LE DXB spectrum obtained in this study is consistent with that reported by RXTE’s Proportional Counter Array.
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DOI：
10.1086/176517
发表时间：
1995-12
期刊：
The Astrophysical Journal
影响因子：
--
作者：
S. Snowden;M. Freyberg;P. Plucinsky;J. Schmitt;J. Truemper;W. Voges;R. Edgar;D. McCammon;W. Sanders
通讯作者：
S. Snowden;M. Freyberg;P. Plucinsky;J. Schmitt;J. Truemper;W. Voges;R. Edgar;D. McCammon;W. Sanders
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发表时间：
1993-08
期刊：
The Astrophysical Journal
影响因子：
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作者：
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通讯作者：
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DOI：
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发表时间：
2019-04
期刊：
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作者：
E. Sabol;S. Snowden
通讯作者：
E. Sabol;S. Snowden
DOI：
10.1016/j.nima.2013.05.015
发表时间：
2013-09
影响因子：
1.4
作者：
K. Tomoyori;K. Kusaka;Taro Yamada;T. Hosoya;T. Ohhara;K. Kurihara;I. Tanaka;M. Katagiri;N. Niimura
通讯作者：
K. Tomoyori;K. Kusaka;Taro Yamada;T. Hosoya;T. Ohhara;K. Kurihara;I. Tanaka;M. Katagiri;N. Niimura
DOI：
10.3847/1538-4357/833/2/268
发表时间：
2016-07
期刊：
The Astrophysical Journal
影响因子：
--
作者：
M. Nobukawa;H. Uchiyama;K. Nobukawa;S. Yamauchi;K. Koyama
通讯作者：
M. Nobukawa;H. Uchiyama;K. Nobukawa;S. Yamauchi;K. Koyama