LIGO/Virgo S190718y: Upper limits from Insight-HXMT/HE observations | |
Luo, Q; Cai, C; Xiao, S; Yi, Q. B; Zheng, Y. G; Huang, Y; Li, C. K; Li, X. B; Li, G; Liao, J. Y | |
2019-07-19 | |
出处 | GRB Coordinates Network |
英文摘要 | Insight-HXMT was taking data normally around the reported LIGO/Virgo S190718y event (GCN #25087), trigger time 2019-07-18T14:35:12.000 UTC. At T0, about 91% of the 90% credible region and all of the 50% credible region of the bayestar sky map were covered by the 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 center of the LIGO-Virgo location probability map (RA=305 deg, DEC=32 deg), 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: 3.2e-08 erg cm^-2 10 s: 1.5e-07 erg cm^-2 Band model 2 (alpha=-1.0, beta=-2.3, Ep=230 keV): 1 s: 5.7e-08 erg cm^-2 10 s: 2.8e-07 erg cm^-2 Band model 3 (alpha=-0.0, beta=-1.5, Ep=1000 keV): 1 s: 1.8e-07 erg cm^-2 10 s: 9.4e-07 erg cm^-2 All measurements above are made with the CsI detectors operating in the regular mode with the energy range of about 80-800 keV (deposited energy). Only gamma-rays with energy greater than about 200 keV can penetrate the spacecraft and leave signals in the CsI detectors installed inside of 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/311005/287653] ![]() |
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,Xiao, S,et al. LIGO/Virgo S190718y: Upper limits from Insight-HXMT/HE observations. 2019. |
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