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In-orbit calibration status of the Insight-HXMT
Author(s): Xiaobo Li; Liming Song; Xufang Li; Ying Tan; Yanji Yang; Mingyu Ge
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Paper Abstract

As China’s first X-ray astronomical satellite, Insight-HXMT (Hard X-ray Modulation Telescope) successfully launched on Jun 15, 2017. It performs timing and spectral studies of bright sources to determine their physical parameters. HXMT carries three main payloads onboard: the High Energy X-ray telescope (HE, 20-250 keV, NaI(Tl)/CsI(Na)), the Medium Energy X-ray Telescope (ME, 5-30 keV, Si-Pin) and the Low Energy X-ray telescope (LE, 1-15 keV, SCD). In orbit, we have used the radioactive sources, activated lines, the fluorescence line, and Cas A to calibrate the gain and energy resolution of the payloads. The Crab pulsar was adopted as the primary effective area calibrator and an empirical function was found to modify the simulated effective areas. The absolute timing accuracy of HXMT is about 100us from the TOA of Crab Pulsar.

Paper Details

Date Published: 6 July 2018
PDF: 11 pages
Proc. SPIE 10699, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, 1069969 (6 July 2018); doi: 10.1117/12.2315166
Show Author Affiliations
Xiaobo Li, Institute of High Energy Physics (China)
Liming Song, Institute of High Energy Physics (China)
Xufang Li, Institute of High Energy Physics (China)
Ying Tan, Institute of High Energy Physics (China)
Yanji Yang, Institute of High Energy Physics (China)
Mingyu Ge, Institute of High Energy Physics (China)


Published in SPIE Proceedings Vol. 10699:
Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray
Jan-Willem A. den Herder; Shouleh Nikzad; Kazuhiro Nakazawa, Editor(s)

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