{
  "bibcode": "2018GCN.23562....1P",
  "body": "S.Poolakkil(UAH), C. Meegan (UAH) and E. Bissaldi (Politecnico & INFN Bari)\nreport on behalf of the Fermi GBM Team:\n\n\"At 11:44:10.53 UT on 25 December 2018, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 181225A (trigger 567431055/ 181225489),\nwhich was also detected by the Fermi LAT (M. Arimoto et al. 2018, GCN\n23561).\nThe GBM on-ground location is consistent with the LAT position.\n\nThe angle from the Fermi LAT boresight\nat the GBM trigger time is 44 degrees.\n\nThe GBM light curve shows multiple peaks\nwith a duration (T90) of about 41.5 s (50-300 keV).\nThe time-averaged spectrum from T0-2.0 s to T0+36.8 s is\nbest fit by a power law function with an exponential\nhigh-energy cutoff.  The power law index is -1.04 +/- 0.10 and\nthe cutoff energy, parameterized as Epeak, is 1887 +/- 966 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(5.569 +/- 0.370)E-06 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+0.54 s in the 10-1000 keV band\nis 3.74 +/- 0.19 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 23562,
  "createdOn": 1545796579000,
  "email": "sp0076@uah.edu",
  "subject": "GRB 181225A: Fermi GBM detection",
  "submitter": "Suraj Poolakkil at UAH  <sp0076@uah.edu>",
  "eventId": "GRB 181225A"
}