{
  "submitter": "Wang-Chen Xue <wcxuemail@gmail.com>",
  "circularId": 35117,
  "submittedHow": "web",
  "body": "Wang-Chen Xue, Shao-Lin Xiong and Chen-Wei Wang\nreport on behalf of the GECAM team:\n\nGECAM-C was triggered on ground by a short burst, GRB 231117A at\n2023-11-17T03:03:19.210 UTC (denoted as T0), which has been \ndetected by Swift (GCN 35071), AstroSat (GCN 35072), AGILE (GCN 35075),\nKonus-Wind (GCN 35079), Glowbug (GCN 35081), and GRBalpha (GCN 35095).\n\nAccording to the ground data of GECAM-C, this burst mainly consists\nof a short pulse with a duration (T90) of 0.59 +/- 0.04 sec (15-4000 keV).\n\nThe GECAM-C localization is consistent with the Swift/BAT localization\n(GCN 35074) within the error.\n\nThe time-averaged spectrum of GECAM-C data from T0 to T0+1.3 s could be\nadequately fit by a cut-off power-law with photon index alpha of -1.52 (-0.07, +0.09),\nand peak energy Ep of 437 (-174, +556) keV. The corresponding burst fluence is\n8.40 (-1.64, +2.70) * 10^-6 erg/cm^2 in 15-4000 keV.\n\nWe note that these results are preliminary and refined 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).",
  "createdOn": 1700375273097,
  "subject": "GRB 231117A: GECAM-C detection",
  "eventId": "GRB 231117A",
  "bibcode": "2023GCN.35117....1X"
}