Institutional Repository of Hard X-ray Modulation Telescope
| 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
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| 2020 | |
| Source Publication | Journal of High Energy Astrophysics
 |
| ISSN | 2214-4048 |
| EISSN | 2214-4056 |
| Volume | 25Pages:39-47 |
| Abstract | We 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. |
| Keyword | Instrumentation: detectors Space vehicles: instrumentation Telescopes |
| DOI | 10.1016/j.jheap.2020.01.002 |
| Indexed By | SCI |
| Correlation | 强相关 |
| Research Direction | 仪器 |
| Member Type | 核心团队 |
| WOS ID | WOS:000519994400006 |
| Publisher | ELSEVIER |
| ADS Bibcode | 2020JHEAp..25...39N |
| ADS URL | https://ui.adsabs.harvard.edu/abs/2020JHEAp..25...39N |
| inspireid | 1779774 |
| ItemNo | IHEP00030099 |
| Citation statistics |
Cited Times:3 [INSPIRE]
Cited Times:7 [ADS]
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| Document Type | 期刊论文 |
| Identifier | http://ir.ihep.ac.cn/handle/311005/287522 |
| Collection | 硬X射线调制望远镜卫星 粒子天体物理中心 |
| Affiliation | 中国科学院高能物理研究所 |
| First Author Affilication | Institute 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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