{
  "bibcode": "2018GCN.23551....1V",
  "body": "P Veres (UAH) reports on behalf of the Fermi GBM Team:\n\n\"At 20:11:37.438 UT on 22 December 2018, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 181222B (trigger 567202302 / 181222841).\n\nThe on-ground calculated location, using the GBM trigger\ndata, is RA = 311.2, DEC = 22.9 (J2000 degrees,\nequivalent to 22 h 45 m, 22 d 52 '), with an uncertainty\nof 1.6 degrees (radius, 1-sigma containment,\nstatistical only; there is additionally a systematic\nerror which we have characterized as a core-plus-tail model, with 90% of\nGRBs having a 3.7 deg error and a small tail suffering a larger than 10 deg\nsystematic error. [Connaughton et al. 2015, ApJS, 216, 32] ).\n\nThe angle from the Fermi LAT boresight at the GBM trigger time is 65\ndegrees.\n\n\nThe GBM light curve shows a very intense peak\nwith a duration (T90) of about 0.5 s (50-300 keV).\nThe time-averaged spectrum from T0  to T0+1.1 s is best fit by\na Band function with Epeak = 380 +/- 8 keV,\nalpha = -0.74 +/- 0.01, and beta = -2.98 +/- 0.11\n\nThe event fluence (10-1000 keV) in this time interval is\n(3.44 +/- 0.03)E-5 erg/cm^2. The 64 ms peak photon flux measured\nstarting from T0+0.14 s in the 10-1000 keV band\nis 800 +/- 6 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 23551,
  "createdOn": 1545543351000,
  "email": "veresp@gmail.com",
  "subject": "GRB 181222B : Fermi GBM detection",
  "submitter": "Peter Veres at UAH  <veresp@gmail.com>",
  "eventId": "GRB 181222B"
}