{
  "bibcode": "2014GCN.15975....1S",
  "body": "M. Stanbro (UAH) reports on behalf of the Fermi GBM Team:\n\n\"At 21:14:35.65 UT on 11 March 2014, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 140311B (trigger 416265278/140311885),\nwhich was also detected by Swift (J. L. Racusin et al. 2014, GCN 15945).\nThe GBM on-ground location, using the Fermi GBM trigger\ndata, is consistent with the Swift/BAT location.The angle to the\nFermi LAT boresight is 110 deg. from Swift location.\n\nThe GBM light curve consists of several overlapping peaks with a\ncombined duration (T90) of 72 s (50-300 keV).\nThe time-averaged spectrum from T0-3 s to T0+69 s is\nwell fit by a power law function with an exponential\n high energy cutoff. The power law index is -0.5 +/- 0.1\nand the high energy cutoff, parameterized as\nEpeak, is 117 +/- 8 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(7.9 +/- 0.4)E-06 erg/cm^2. The 1.0-sec peak photon flux measured\nstarting from T0+0.6 s in the 10-1000 keV band\nis 3.2 +/- 0.3 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 15975,
  "createdOn": 1394656840000,
  "email": "mcs0001@uah.edu",
  "subject": "GRB 140311B: Fermi GBM Detection",
  "submitter": "Matthew Stanbro at UAH/Fermi  <mcs0001@uah.edu>",
  "eventId": "GRB 140311B"
}