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	LIGO/Virgo S190510g: Insight-HXMT/HE updated observation
	Luo, Q; Cai, C; Yi, Q. B; Xiao, S; Li, C. K; Li, X. B; Li, G; Liao, J. Y; Xiong, S. L; Liu, C. Z
	2019-05-11
出处	GRB Coordinates Network
英文摘要	Following up on the updated localization (GCN #24448), we have re-analyzed Insight-HXMT/HE data of S190510g (GCN #24451). The previous estimated location we used (GCN #24451) is RA = 190.0, Dec = 0.0 (J2000, degrees).And the updated estimated location we used isRA = 90.0, Dec = -34.0 (J2000, degrees).Insight-HXMT was taking data normally around the GW trigger time(T0=2019-05-10 02:59:39 UTC). For the preferred sky map (GCN #24448),at T0, all of the LIGO localization region was covered by Insight-HXMT without occultation by the Earth.Within T0 +/- 100 s, no significant excess events (SNR > 3 sigma) are found in a search of the Insight-HXMT/HE raw light curves.Assuming the GW counterpart GRB with three typical GRB Band spectral models, two typical duration timescales (1 s, 10 s) from the peak position of the LIGO-Virgo location probability map, the 5-sigma upper-limits fluence (0.2 - 5 MeV, incident energy) are reported below:Band model 1 (alpha=-1.9, beta=-3.7, Ep=70 keV):1 s: 5.5e-08 erg cm^-210 s: 1.5e-07 erg cm^-2Band model 2 (alpha=-1.0, beta=-2.3, Ep=230 keV):1 s: 9.2e-08 erg cm^-210 s: 2.6e-07 erg cm^-2Band model 3 (alpha=-0.0, beta=-1.5, Ep=1000 keV):1 s: 2.4e-07 erg cm^-210 s: 8.3e-07 erg cm^-2All measurements above are made with the CsI detectors operating in theregular mode with the energy range of about 80-800 keV (deposited energy).Only gamma-rays with energy greater than about 200 keV can penetratethe spacecraft and leave signals in the CsI detectors installed insideof the spacecraft.Insight-HXMT is the first Chinese space X-ray telescope, which was funded jointly by the China National Space Administration (CNSA) and the Chinese Academy of Sciences (CAS). More information could be found at: http://www.hxmt.org.
内容类型	GCN
源URL	[http://ir.ihep.ac.cn/handle/311005/287621]
专题	硬X射线调制望远镜卫星 高能物理研究所_多学科研究中心
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	Luo, Q,Cai, C,Yi, Q. B,et al. LIGO/Virgo S190510g: Insight-HXMT/HE updated observation. 2019.

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