{
  "body": "Chen-Wei Wang, Cheng-Kui Li, Shao-Lin Xiong, and Chao Zheng report on behalf of the Insight-HXMT team:\n\nAt 2025-10-09T01:51:15.250 (T0), Insight-HXMT/HE detected the burst GRB 251009B, which is also detected by SVOM/GRM.\n\nThe Insight-HXMT/HE light curve mainly consists of double pulses with a T90 of 1.00 +0.15/-0.05 s. The total counts from this burst is 2442 counts.\n\nThe HXMT/HE light curve can be found here:\nhttps://www.bursthub.cn//admin/static/hxmtgrb251009B.png\n\nAll measurements above are made with the CsI detectors 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://www.hxmt.org.\n",
  "circularId": 42187,
  "eventId": "GRB 251009B",
  "submittedHow": "web",
  "bibcode": "2025GCN.42187....1W",
  "subject": "GRB 251009B: Insight-HXMT detection of a short burst",
  "format": "text/plain",
  "createdOn": 1760111438881,
  "submitter": "Chenwei Wang at IHEP <cwwang@ihep.ac.cn>"
}