{
  "bibcode": "2011GCN.12287....1X",
  "body": "S. Xiong (UAH) reports on behalf of the Fermi GBM Team:\n\n\"At 20:37:54.221 UT on 18 August 2011, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 110818A (trigger 335392676 / 110818860 ),\nwhich was also detected by the Swift (Markwardt et al. 2011, GCN 12279).\nThe GBM on-ground location is consistent with the Swift position.\nThe angle from the Fermi LAT boresight is 96 degrees.\nThis burst was also independently detected by INTEGRAL SPI-ACS.\n\nThe GBM light curve consists of multiple peaks\nwith a duration (T90) of about 75 s (50-300 keV).\nThe time-averaged spectrum from T0-16.4 s to T0+57.3 s is\nbest fit by a power law function with an exponential\nhigh-energy cutoff.  The power law index is -1.33 +/- 0.08 and\nthe cutoff energy, parameterized as Epeak, is 256.3 +/- 55.3 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(8.2 +/- 0.6)E-6 erg/cm^2. The 64 ms peak photon flux measured\nstarting from T0+22.66 s in the 10-1000 keV band\nis 5.0 +/- 1.4 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 12287,
  "createdOn": 1313794940000,
  "email": "sx0002@uah.edu",
  "subject": "GRB 110818A: Fermi GBM observation",
  "submitter": "Shaolin Xiong at UAH  <sx0002@uah.edu>",
  "eventId": "GRB 110818A"
}