{
  "eventId": "GRB 260115A",
  "body": "Jin-Peng Zhang, Chen-Wei Wang, Shao-Lin Xiong (IHEP) report on behalf of GECAM team:\n\nGECAM-B was triggered in-flight by GRB 260115A, at 2026-01-15T17:46:45.900 UTC (denoted as T0), which is also detected by Fermi/GBM (Fermi GBM team, GCN #43417).\n\nAccording to the GECAM-B light curves in about 70-6000 keV, this burst mainly consists of a bright pulse and some fainter emissions, with a duration (T90) of 4.8 +2.4/-1.4 s.\n\nThe GECAM-B light curve can be found here:\nhttps://www.bursthub.cn//admin/static/gecambgrb260115A.png\n\nThe time-averaged spectrum from T0 - 1.0 to T0 + 4.0 s is best fitted by a power law function. The power law index is -2.2 +0.3/-0.4. The event fluence (10-1000 keV) in this time interval is (2.8 +0.7/-0.4)E-06 erg/cm^2. \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).",
  "format": "text/plain",
  "subject": "GRB 260115A: GECAM-B observation",
  "submitter": "zhangjinpeng@ihep.ac.cn",
  "createdOn": 1768610877683,
  "submittedHow": "web",
  "bibcode": "2026GCN.43434....1Z",
  "circularId": 43434
}