Five-year in-orbit background of Insight-HXMT

Autor: Jin-Yuan Liao, Shu Zhang, Juan Zhang, Gang Li, Zhi Chang, Yu-Peng Chen, Ming-Yu Ge, Jing Jin, Xue-Feng Lu, Yuan You, Xue-Lei Cao, Yong Chen, Yue Huang, Wei-Chun Jiang, Xiao-Bo Li, Xu-Fang Li, Zheng-Wei Li, Cong-Zhan Liu, Ying Tan, Yan-Ji Yang, Yi-Fei Zhang, Hai-Sheng Zhao, Fang-Jun Lu, Yu-Peng Xu, Jin-Lu Qu, Li-Ming Song, Shuang-Nan Zhang
Rok vydání: 2023
Předmět:
Zdroj: Radiation Detection Technology and Methods.
ISSN: 2509-9949
2509-9930
DOI: 10.1007/s41605-023-00388-y
Popis: Purpose: We present the five-year in-orbit background evolution of Insight-HXMT since the launch, as well as the effects of the background model in data analysis. Methods: The backgrounds of the three main payloads, i.e., Low-Energy Telescope, Medium-Energy Telescope and High-Energy Telescope, are described, respectively. The evolution of the background over time is obtained by simply comparing the background in every year during the in-orbit operation of Insight-HXMT. Results: The major observational characteristics of the Insight-HXMT in-orbit background are presented, including the light curve, spectrum, geographical distribution, and long-term evolution. The systematic error in background estimation is investigated for every year. Conclusion: The observational characteristics of the five-year in-orbit background are consistent with our knowledge of the satellite design and the space environment, and the background model is still valid for the latest observations of Insight-HXMT.
22 pages, 25 figures, accepted for publication in RDTM
Databáze: OpenAIRE
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