{
  "subject": "GRB 120911A: Fermi GBM observation",
  "eventId": "GRB 120911A",
  "bibcode": "2012GCN.13754....1G",
  "createdOn": 1347433363000,
  "circularId": 13754,
  "submitter": "David Gruber at MPE  <dgruber@mpe.mpg.de>",
  "email": "dgruber@mpe.mpg.de",
  "body": "David Gruber (MPE) reports on behalf of the Fermi GBM Team:\n\n\"At 07:08:33.99 UT on 11 September 2012, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 120911A (trigger 369040116 / 120911298).\nwhich was also detected by the Swift/BAT (Cannizzo et al. 2012, GCN 13744).\n\nThe GBM on-ground location is consistent with the Swift position.\nThe angle from the Fermi LAT boresight is 11 degrees.\n\nThe GBM light curve consists of two pulses\nwith a duration (T90) of about 22 s (50-300 keV).\nThe time-averaged spectrum from T0-4.6 s to T0+22.0 s is\nbest fit by a power law function with an exponential\nhigh-energy cutoff.  The power law index is -0.36 +/- 0.26 and\nthe cutoff energy, parameterized as Epeak, is 64.2 +/- 5.1 keV\n\nThe event fluence (10-1000 keV) in this time interval is\n(2.34 +/- 0.04)E-06 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0-0.38 s in the 10-1000 keV band\nis 4.31 +/- 0.27 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\""
}