In-orbit Calibration to the Point-Spread Function of Insight-HXMT

doi:10.1016/j.jheap.2020.01.002

CORC > 高能物理研究所 > 中国科学院高能物理研究所 > 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
刊名	Journal of High Energy Astrophysics
	2020
卷号	25 页码:39-47
关键词	Instrumentation: detectors Space vehicles: instrumentation Telescopes
ISSN号	2214-4048
DOI	10.1016/j.jheap.2020.01.002
英文摘要	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.
电子版国际标准刊号	2214-4056
出版者	ELSEVIER
WOS记录号	WOS:000519994400006
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/287522]
专题	硬X射线调制望远镜卫星高能物理研究所_粒子天体物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 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.