{
  "bibcode": "2012GCN.14078....1Y",
  "body": "David Yu (MPE) reports on behalf of the Fermi GBM Team:\n\n\"At 13:47:03.59 UT on 11 December 2012, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 121211A (trigger 376926426 / 121211574)\nwhich was also detected by the Swift/BAT (Mangano et al. 2012, GCN 14057).\nThe GBM on-ground location is consistent with the Swift position.\n\nThe angle from the Fermi LAT boresight is 74 degrees.\n\nThe GBM light curve consists of a double peaked pulse\nwith a duration (T90) of about 5.4 s (50-300 keV).\nThe time-averaged spectrum from T0-3.072 s to T0+1.536 s is\nwell fit by a power law function with an exponential\nhigh-energy cutoff.  The power law index is -0.30 +/- 0.34 and\nthe cutoff energy, parameterized as Epeak, is 95.96 +/- 12.60 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(4.825 +/- 0.507)E-07 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0-0.768 s in the 10-1000 keV band\nis 2.402 +/- 0.202 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 14078,
  "createdOn": 1355389330000,
  "email": "sptfung@mpe.mpg.de",
  "subject": "GRB 121211A: Fermi GBM observation",
  "submitter": "Hoi-Fung Yu at MPE  <sptfung@mpe.mpg.de>",
  "eventId": "GRB 121211A"
}