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LIGO/Virgo S191205ah: Upper limits from Insight-HXMT/HE observations
Zheng, Y. G; Cai, C; Luo, Q; Xiao, S; Yi, Q. B; Huang, Y; Li, C. K; Li, G; Li, X. B; Liao, J. Y; Xiong, S. L; Liu, C. Z; Li, X. F; Li, Z. W; Chang, Z; Zhang, A. M; Zhang, Y. F; Lu, X. F; Zou, C. L; Jin, Y. J; Zhang, Z; Li, T. P; Lu, F. J; Song, L. M; Wu, M; Xu, Y. P; Zhang, S. N.; Team, Insight-HXMT
GCN Number26373
Source PublicationGRB Coordinates Network
AbstractInsight-HXMT was taking data normally around the reported LIGO/Virgo S191205ah event (GCN #26350), trigger time 2019-12-05T21:52:08.569 UTC. At T0, about 33% of the LIGO localization region was covered by the Insight-HXMT without occultationby 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=167.34 deg, DEC=1.64 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: 5.3e-07 erg cm^-2 10 s: 1.4e-06 erg cm^-2 Band model 2 (alpha=-1.0, beta=-2.3, Ep=230 keV): 1 s: 7.8e-07 erg cm^-2 10 s: 2.1e-06 erg cm^-2 Band model 3 (alpha=-0.0, beta=-1.5, Ep=1000 keV): 1 s: 9.7e-07 erg cm^-2 10 s: 2.8e-06 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.
ADS URLhttps://ui.adsabs.harvard.edu/abs/2019GCN.26373....1Z
ADS Bibcode2019GCN.26373....1Z
GCN URLhttps://gcn.gsfc.nasa.gov/gcn/gcn3/26373.gcn3
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Cited Times:0 [ADS]
Document TypeGCN
Recommended Citation
GB/T 7714
Zheng, Y. G,Cai, C,Luo, Q,et al. LIGO/Virgo S191205ah: Upper limits from Insight-HXMT/HE observations. 2019.
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