{
  "bibcode": "2012GCN.12806....1R",
  "body": "Arne Rau (MPE) and Charles Meegan (USRA) report on behalf of the Fermi \nGBM Team:\n\n\"At 14:51:55.02 UT on 22 December 2011, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 111222A (trigger 346258317 / 111222619). The \nburst\nwas was also detected by the 3rd Interplanetary Network (Hurley et al. \n2011, GCN 12714)\nand The GBM on-ground location is consistent with the IPN position.\n\nThe angle from the Fermi LAT boresight is 136 degrees. Moreover, this \nburst was bright\nenough to result in a Fermi spacecraft autonomous rapid repoint (ARR) \nmaneuver.\n\nThe GBM light curve shows a single pulse with a duration (T90) of about \n0.32 s (50-300 keV).\nThe time-averaged spectrum from T0-0.064 s to T0+0.320 s is best fit by \na power law\nfunction with an exponential high-energy cutoff. The power law index is \n-0.38 +/- 0.06\nand the cutoff energy, parameterized as Epeak, is 725 +/- 45 keV.\n\nThe event fluence (10-1000 keV) in this time interval is (1.502 +/- \n0.034)E-05 erg/cm^2.\nThe 64-msec peak photon flux measured starting from T0+0.0 s in the \n10-1000 keV band\nis 60.2 +/- 3.4 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary; final \nresults will be published\nin the GBM GRB Catalog.\"",
  "circularId": 12806,
  "createdOn": 1325750049000,
  "email": "arau@mpe.mpg.de",
  "subject": "GRB 111222A: Fermi GBM observations",
  "submitter": "Arne Rau at MPE  <arau@mpe.mpg.de>",
  "eventId": "GRB 111222A"
}