{
  "bibcode": "2017GCN.21593....1L",
  "body": "Z. W. Li, J. Y. Liao, C. K. Li, X. B. Li, S. L. Xiong, C. Z. Liu,\nX. F. Li, Z. Chang, X. F. Lu, J. L. Zhao, A. M. Zhang, Y. F. Zhang,\nC. L. Zou (IHEP), Y. J. Jin, X. Ma, Z. Zhang (THU), T. P. Li (IHEP/THU),\nF. J. Lu, L. M. Song, H. Y. Wang, M. Wu, Y. P. Xu, S. N. Zhang (IHEP),\nreport on behalf of the Insight-HXMT team:\n\nDuring the commissioning phase, at 2017-08-17T21:47:34.00 (T0),\nInsight-HXMT detected GRB 170817B (trigger ID: HEB170817908)\nin a routine search of the data, which was also observed by\nFermi/GBM (Roberts et al. 2017, GCN 21540).\n\nThe Insight-HXMT light curve consists of multiple pulses\nwith a duration (T90) of 2.64 s measured from T0+0.40 s.\nThe 50-ms peak rate, measured from T0+0.40 s, is 6135.4 cnts/sec.\nThe total counts from this burst is 5353.1 counts.\n\nURL_LC: http://www.hxmt.org/images/GRB/HEB170817908_lc.jpg\n\nAll measurements above are made with the CsI detectors operating in the\nregular mode with the energy range of about 80-800 keV (record energy).\nOnly gamma-rays with energy greater than about 200 keV can penetrate\nthe spacecraft and leave signals in the CsI detectors installed inside\nof the telescope.\n\nThe time-averaged spectrum from T0 to T0+3.60 s is\nadequately fit by a Power Law model with spectral index = -1.60 +/- 0.05.\nThe energy fluence is (1.09 +/- 0.05)E-05 erg/cm^2 in 200 - 5000 keV in\nthis time interval.\n\nThe analysis results presented above are preliminary;\nfinal results will be published elsewhere.\n\nInsight-HXMT is the first Chinese space X-ray telescope, which was funded\njointly by the China National Space Administration (CNSA) and the Chinese\nAcademy of Sciences (CAS). More information about it could be found at:\nhttp://www.hxmt.org/index.php/enhome .",
  "circularId": 21593,
  "createdOn": 1503149555000,
  "email": "xiongsl@ihep.ac.cn",
  "subject": "GRB 170817B: Insight-HXMT observation",
  "submitter": "Shaolin Xiong at IHEP  <xiongsl@ihep.ac.cn>",
  "eventId": "GRB 170817B"
}