{
  "eventId": "GRB 240112A",
  "body": "Chen-Wei Wang, Shao-Lin Xiong report on behalf of the GECAM team:\nGECAM-B was triggered in-flight by a bright burst, tentatively named as GRB 240112A (see below),at 2024-01-12T05:41:25.850 UTC (denoted as T0).\n\nGECAM-B localized this burst to the following position (J2000): \nRa: 290.4 deg \nDec: 18.4 deg\nErr: 3.6 deg (1-sigma, statistical only)\nWe note that, although this in-flight location is very preliminary, it is generally consistent with SGR J1935+2154 within the error, therefore we suggest that it could be possibly from this magnetar. However, we cannot exclude the possibility of other origins at this moment.\n\nAccording to the realtime alert data of GECAM-B, this burst mainly consists of two pulses\nwith a duration of about 3 s. The time-averaged spectrum from T0-0.2 to T0+3.8 s \ncould be adequately fit by a power law with high energy exponential cutoff function \nwith a fluence of about 5E-6 erg/cm^2 in 20-1000 keV.\n\nThe GECAM light curve could be found here:\nhttp://twiki.ihep.ac.cn/pub/GECAM/GRBList/240112_lc.png\n\nWe note that these results are based on realtime alert data and thus very preliminary. \nRefined analysis will be reported later.\n\nGravitational wave high-energy Electromagnetic Counterpart All-sky Monitor\n(GECAM) mission originally consists of two micro-satellites (GECAM-A and GECAM-B)\nlaunched in Dec. 2020. As the third member of GECAM constellation, \nGECAM-C was launched onboard SATech-01 experimental satellite in July 2022. \nGECAM mission is funded by the Chinese Academy of Sciences (CAS).\n",
  "subject": "GRB 240112A: GECAM detection of a burst",
  "bibcode": "2024GCN.35520....1W",
  "circularId": 35520,
  "createdOn": 1705042981411,
  "submitter": "Chenwei Wang at IHEP <cwwang@ihep.ac.cn>",
  "submittedHow": "web"
}