{
  "bibcode": "2012GCN.13644....1X",
  "body": "Shaolin Xiong (UAH) and Chip Meegan (USRA)\nreport on behalf of the Fermi GBM Team:\n\n\"At 00:20:31.288 UT on 11 August 2012, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 120811B (trigger 366337233 / 120811014),\nwhich was also located by the IPN (S. Golenetskii et al. 2012, GCN 13627).\nThe GBM on-ground location is consistent with the IPN position.\nThe angle from the Fermi LAT boresight is 85 degrees.\n\nThe GBM light curve consists of two pulses\nwith a duration (T90) of about 0.448 s (50-300 keV).\nThe time-averaged spectrum from T0-0.064 s to T0+0.384 s is\nbest fit by a power law function with an exponential\nhigh-energy cutoff.  The power law index is -0.29 +/- 0.09 and\nthe cutoff energy, parameterized as Epeak, is 1294 +/- 145 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(2.45 +/- 0.10)E-6 erg/cm^2. The 64 ms peak photon flux measured\nstarting from T0+0.064 s in the 10-1000 keV band\nis 21.0 +/- 1.3 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 13644,
  "createdOn": 1344997349000,
  "email": "sx0002@uah.edu",
  "subject": "GRB 120811B: Fermi GBM observation",
  "submitter": "Shaolin Xiong at UAH  <sx0002@uah.edu>",
  "eventId": "GRB 120811B"
}