{
  "bibcode": "2017GCN.21869....1V",
  "body": "A. von Kienlin (MPE), R. Hamburg (UAH), and C. Meegan (UAH)\nreport on behalf of the Fermi GBM Team:\n\n\"At 06:24:22.79 UT on 11 September 2017, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 170911A (trigger 526803867 / 170911267)\nwhich was also detected by the MAXI GSC\n(Takao et al. 2017, GCN 21858)\nThe GBM on-ground location is consistent with the MAXI position.\n\nThe angle from the Fermi LAT boresight at the GBM trigger time is 43 degrees.\n\nThe GBM light curve shows a single peak\nwith a duration (T90) of about 20 s (50-300 keV).\nThe time-averaged spectrum from T0-3.072 s to T0+4.096 s is\nbest fit by a power law function with an exponential\nhigh-energy cutoff.  The power law index is -1.2 +/- 0.2 and\nthe cutoff energy, parameterized as Epeak, is 260 +/- 120 keV\n\n\nThe event fluence (10-1000 keV) in this time interval is\n(9.5 +/- 1.7)E-07 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0-1.79 s in the 10-1000 keV band\nis 1.96 +/- 0.17 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 21869,
  "createdOn": 1505216968000,
  "email": "azk@mpe.mpg.de",
  "subject": "GRB 170911A: Fermi GBM observation",
  "submitter": "Andreas von Kienlin at MPE  <azk@mpe.mpg.de>",
  "eventId": "GRB 170911A"
}