{
  "createdOn": 1769958393922,
  "format": "text/plain",
  "submitter": "Xinghao Luo at IHEP <2952704891@qq.com>",
  "eventId": "GRB 260131A",
  "subject": "GRB 260131A: Insight-HXMT/HE detection",
  "circularId": 43591,
  "bibcode": "2026GCN.43591....1L",
  "body": "Xing-Hao Luo, Chen-Wei Wang, Chao Zheng, Hao-Xuan Guo, Xiao-Bo Li and Shao-Lin Xiong (IHEP) report on behalf of the Insight-HXMT team:\n\nAt 2026-01-31T06:39:31.400 (T0), Insight-HXMT/HE detected the long burst GRB 260131A, which is also detected by Fermi/GBM (Fermi GBM Team, GCN #43579) .\n\t\nThe Insight-HXMT/HE light curve mainly consists of multiple pulses with a T90 of 7.0 +2.5/-1.0 s. The 1s peak rate, measured from T0+1.75 s, is 982 cnts/sec. Insight-HXMT/HE detected a total of 5366 counts form this burst.\n\nThe HXMT/HE light curve can be found here:\nhttps://www.bursthub.cn//admin/static/hxmtgrb260131A.png\n\nAll measurements above are made with the CsI detectors of Insight-HXMT/HE operating in the regular mode with the energy range of about 60-900 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 telescope.\n\nInsight-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 about it could be found at: http://hxmten.ihep.ac.cn/\n",
  "submittedHow": "web"
}