{
  "bibcode": "2017GCN.21872....1V",
  "body": "P Veres (UAH), A von Kienlin (MPE) and C Meegan (UAH)\nreport on behalf of the Fermi GBM Team:\n\n\"At 06:33:46.91 UT on 12 September 2017, the Fermi Gamma-Ray Burst\nMonitor triggered and located GRB 170912B (trigger 526890831 /\n170912273) which was also detected by the Swift satellite (LaPorte et\nal., GCN 21864). The GBM on-ground location is consistent with the\nSwift position.\n\nThe angle from the Fermi LAT boresight at the GBM trigger\ntime is 39 degrees.\n\nThe GBM light curve shows multiple overlapping peaks\nwith a duration (T90) of about 13.3 s (50-300 keV).\nThe time-averaged spectrum from T0-1.7 s to T0+13.7 s is\nbest fit by a Band function with Epeak = 45.2 +/- 6.0 keV,\nalpha = -0.88 +/- 0.23, and beta = -2.13 +/- 0.06.\n\nThe event fluence (10-1000 keV) in this time interval is\n(4.5 +/- 0.2)E-6 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0-0.1 s in the 10-1000 keV band\nis 8.7 +/- 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": 21872,
  "createdOn": 1505232335000,
  "email": "veresp@gmail.com",
  "subject": "GRB 170912B: Fermi GBM observations",
  "submitter": "Peter Veres at UAH  <veresp@gmail.com>",
  "eventId": "GRB 170912B"
}