NAOC Open IR
Background model for the Low-Energy Telescope of Insight-HXMT
Liao, Jin-Yuan1; Zhang, Shu1; Chen, Yong1; Zhang, Juan1; Jin, Jing1; Chang, Zhi1; Chen, Yu-Peng1; Ge, Ming-Yu1; Guo, Cheng-Cheng1,2; Li, Gang1; Li, Xiao-Bo1; Lu, Fang-Jun1; Lu, Xue-Feng1; Nie, Jian-Yin1; Song, Li-Ming1; Yang, Yan-Ji1; You, Yuan1,2; Zhao, Hai-Sheng1; Zhang, Shuang-Nan1,2,3
2020-08-01
Source PublicationJOURNAL OF HIGH ENERGY ASTROPHYSICS
ISSN2214-4048
Volume27Pages:24-32
AbstractWith more than 150 blank sky observations at high Galactic latitude, we make a systematic study to the background of the Low Energy Telescope (LE) of the Hard X-ray Modulation Telescope(dubbed as Insight-HXMT). Both the on-ground simulation and the in-orbit observation indicate that the background spectrum mainly has two components. One is the particle background that dominates above 7keV and its spectral shape is consistent in every geographical locations. Another is the diffuse X-ray background that dominates below 7keV and has a stable spectrum less dependent of the sky region. The particle background spectral shape can be obtained from the blind detector data of all the blank sky observations, and the particle background intensity can be measured by the blind detector at 10 - 12.5keV. The diffuse X-ray background in the high Galactic latitude can also be obtained from the blank sky spectra after subtracting the particle background. Based on these characteristics, we develop the background model for both the spectrum and the light curve. The systematic error for the background spectrum is investigated with different exposures (T-exp). For the spectrum with T-exp = 1 ks, the average systematic errors in 1 - 7keV and 1 - 10 keV are 4.2% and 3.7%, respectively. We also perform the systematic error analyses of the background light curves with different energy bands and time bins. The results show that the systematic errors for the light curves with different time bins are < 8% in 1 - 10keV. (C) 2020 Elsevier B.V. All rights reserved.
KeywordInstrumentation: detectors Space vehicles: instruments Methods: data analysis X-rays: general
Funding OrganizationChina National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China
DOI10.1016/j.jheap.2020.02.010
Language英语
Funding ProjectChina National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project[2016YFA0400802] ; National Program on Key Research and Development Project[2016YFA0400801] ; National Natural Science Foundation of China[U1838202] ; National Natural Science Foundation of China[U1838201]
Funding OrganizationChina National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000569885200003
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/81326
Collection中国科学院国家天文台
Corresponding AuthorLiao, Jin-Yuan
Affiliation1.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
2.Univ Chinese Acad Sci, Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Liao, Jin-Yuan,Zhang, Shu,Chen, Yong,et al. Background model for the Low-Energy Telescope of Insight-HXMT[J]. JOURNAL OF HIGH ENERGY ASTROPHYSICS,2020,27:24-32.
APA Liao, Jin-Yuan.,Zhang, Shu.,Chen, Yong.,Zhang, Juan.,Jin, Jing.,...&Zhang, Shuang-Nan.(2020).Background model for the Low-Energy Telescope of Insight-HXMT.JOURNAL OF HIGH ENERGY ASTROPHYSICS,27,24-32.
MLA Liao, Jin-Yuan,et al."Background model for the Low-Energy Telescope of Insight-HXMT".JOURNAL OF HIGH ENERGY ASTROPHYSICS 27(2020):24-32.
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