{
  "bibcode": "2020GCN.29072....1M",
  "body": "C. Malacaria (NASA-MSFC/USRA), P. Veres (UAH) and C. Meegan (UAH)\nreport on behalf of the Fermi GBM Team:\n\n\"At 19:00:31.24 UT on 16 December 2020, the Fermi Gamma-Ray Burst Monitor (GBM)\ntriggered and located GRB 201216A (trigger 629838036 / 201216792),\nwhich was also detected by the Swift/BAT (Tohuvavohu et al. 2020, GCN 29059)\nand initiated a Swift/XRT ToO (Evans 2020, GCN 29065).\nThe Fermi GBM Final Real-time Localization (GCN 29057) is consistent with the Swift position.\n\nThe angle from the Fermi LAT boresight at the GBM trigger time is 30 degrees.\n\nThe GBM light curve consists of a main peak followed by multiple subsequent peaks.\nThe duration (T90) is about 25.6 s (50-300 keV).\nThe time-averaged spectrum from T0-10 s to T0+13 s is\nbest fit by a power law function with an exponential\nhigh-energy cutoff. The power law index is -0.51 +/- 0.22 and\nthe cutoff energy, parameterized as Epeak, is 263 +/- 55 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(2.343 +/- 0.330)E-06 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+64 ms in the 10-1000 keV band\nis 1.6 +/- 0.2 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog:\nhttps://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html\n\nFor Fermi GBM data and info, please visit the official Fermi GBM Support Page:\nhttps://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"",
  "circularId": 29072,
  "createdOn": 1608217311000,
  "email": "cmalacaria@usra.edu",
  "subject": "GRB 201216A: Fermi GBM detection",
  "submitter": "Christian Malacaria at NASA-MSFC/USRA  <cmalacaria@usra.edu>",
  "eventId": "GRB 201216A"
}