{
  "subject": "GRB 161109A: Fermi GBM observation",
  "eventId": "GRB 161109A",
  "bibcode": "2016GCN.20156....1B",
  "createdOn": 1478706337000,
  "circularId": 20156,
  "submitter": "Elisabetta Bissaldi at U.Innsbruk/IAPP  <Elisabetta.Bissaldi@uibk.ac.at>",
  "email": "Elisabetta.Bissaldi@uibk.ac.at",
  "body": "E. Bissaldi (Politecnico & INFN Bari)\nreports on behalf of the Fermi GBM Team:\n\n\n\"At 06:18:45.66 UT on 9 November 2016, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 161109A (trigger 50036512 / 161109263),\nwhich was also detected by the Fermi/LAT\n(Desiante et al. 2008, GCN 20155).\nThe GBM on-ground location is consistent with the LAT position.\nThe angle from the Fermi LAT boresight at the GBM trigger time is 77 degrees.\n\nThe GBM light curve consists of three peaks\nwith a duration (T90) of about 24 s (50-300 keV).\nThe time-averaged spectrum from T0 to T0+30 s is\nbest fit by a Band function with Epeak = 250 +/- 16 keV,\nalpha = -0.73 +/- 0.04, and beta = -2.06 +/- 0.06.\n\nThe event fluence (10-1000 keV) in this time interval is\n(2.30 +/- 0.04)E-05 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+17 s in the 10-1000 keV band\nis 16.7 +/- 0.3 ph/s/cm^2.\n\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\""
}