{
  "createdOn": 1791034598298,
  "format": "text/plain",
  "eventId": "GRB 260921B",
  "submitter": "guohx@ihep.ac.cn",
  "eventType": [
    "GRB",
    "Gamma-ray Transient"
  ],
  "body": "Hao-Xuan Guo, Jin-Ye Luo, Chen-Wei Wang, Chao Zheng, Shao-Lin Xiong (IHEP) report on behalf of GECAM team:\n\nGECAM-B was triggered on-ground by GRB 260921B, at 2026-09-21T21:44:41.950 UTC (denoted as T0), which is also detected by Fermi/GBM (Fermi GBM team, GCN #45685).\n\nAccording to the GECAM-B light curves in about 70-6000 keV, this burst mainly consists of multiple pulses with a duration (T90) of 46 +4/-7 s.\n\nThe GECAM-B light curve can be found here:\nhttps://www.bursthub.cn/gcn/2026/gecambgrb260921B.png\n\nGravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) mission originally consists of two micro-satellites (GECAM-A and GECAM-B) launched in Dec. 2020. As the third member of GECAM constellation, GECAM-C was launched onboard SATech-01 experimental satellite in July 2022. GECAM mission is funded by the Chinese Academy of Sciences (CAS).",
  "circularId": 45805,
  "submittedHow": "web",
  "subject": "GRB 260921B: GECAM-B observation"
}