{
  "circularId": 45948,
  "submittedHow": "web",
  "subject": "GRB 261009A: GECAM-B detection of a burst",
  "body": "Xue-Yuan Zao, Chao Zheng, Shao-Lin Xiong (IHEP) report on behalf of GECAM team:\n\nGECAM-B was triggered on-ground by the burst GRB 261009A at 2026-10-09T22:19:12.000 UTC (denoted as T0), which is also detected by Fermi/GBM (Fermi GBM Team, GCN #45879). According to the GECAM-B light curves in about 70-6000 keV, this burst mainly consists of multiple pulses with a duration (T90) of 17.0 +5.0/-4.5 s. \n\nThe on-ground localization of GECAM-B is:\nRa: 125.8 deg   \nDec: 45.4 deg\nErr: 10.7 deg (1-sigma, statistical only)\n\nThe GECAM-B light curve can be found here:\nhttps://www.bursthub.cn/gcn/2026/gecambgrb261009A.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).\n",
  "submitter": "xueyuan zao <zaoxueyuan@gmail.com>",
  "createdOn": 1791981172276,
  "eventType": [
    "GRB",
    "Gamma-ray Transient"
  ],
  "format": "text/plain",
  "eventId": "GRB 261009A"
}