Subjects: Astronomy >> Astrophysical processes submitted time 2023-02-19
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
Abstract： 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.
Peer Review Status:
Awaiting Review
Subjects: Astronomy >> Astrophysical processes submitted time 2023-02-19
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
Abstract： 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.
Peer Review Status:Awaiting Review
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