IHEP OpenIR  > 硬X射线调制望远镜卫星
In-orbit Calibration to the Point-Spread Function of Insight-HXMT
Nang, Yi; Liao, Jin-Yuan; Sai, Na; Wang, Chen; Guan, Ju; Li, Cheng-Kui; Guo, Cheng-Cheng; Liu, Yuan; Jin, Jing; Li, Xiao-Bo; Zhang, Shu; Zhang, Shuang-Nan
Source PublicationJournal of High Energy Astrophysics
AbstractWe make the in-orbit calibration to the point-spread functions (PSFs) of the collimators of the Hard X-ray Modulation Telescopewith the scanning observation of the Crab. We construct the empirical adjustments to the theoretically calculated geometrical PSFs. The adjustments contain two parts: a rotating matrix to adjust the directional deviation of the collimators and a paraboloidal function to correct the inhomogeneity of the real PSFs. The parameters of the adjusting matrices and paraboloidal functions are determined by fitting the scanning data with lower scanning speed and smaller intervals during the calibration observations. After the PSF calibration, the systematic errors in source localization in the Galactic plane scanning survey are 0 degrees.010, 0 degrees.015, 0 degrees.113for the Low-Energy Telescope (LE), the Medium-Energy telescope (ME) and the High-Energy telescope (HE), respectively; meanwhile, the systematic errors in source flux estimation are 1.8%, 1.6%, 2.7% for LE, ME and HE, respectively. (C) 2020 Elsevier B.V. All rights reserved.
KeywordInstrumentation: detectors Space vehicles: instrumentation Telescopes
Indexed BySCI
Research Direction仪器
Member Type核心团队
WOS IDWOS:000519994400006
ADS Bibcode2020JHEAp..25...39N
ADS URLhttps://ui.adsabs.harvard.edu/abs/2020JHEAp..25...39N
Citation statistics
Cited Times:3 [INSPIRE]
Cited Times:7 [ADS]
Document Type期刊论文
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Nang, Yi,Liao, Jin-Yuan,Sai, Na,et al. In-orbit Calibration to the Point-Spread Function of Insight-HXMT[J]. Journal of High Energy Astrophysics,2020,25:39-47.
APA Nang, Yi.,Liao, Jin-Yuan.,Sai, Na.,Wang, Chen.,Guan, Ju.,...&Zhang, Shuang-Nan.(2020).In-orbit Calibration to the Point-Spread Function of Insight-HXMT.Journal of High Energy Astrophysics,25,39-47.
MLA Nang, Yi,et al."In-orbit Calibration to the Point-Spread Function of Insight-HXMT".Journal of High Energy Astrophysics 25(2020):39-47.
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