{
  "bibcode": "2017GCN.20827....1V",
  "body": "P. Veres (UAH), C. Meegan (UAH) and A. von Kienlin (MPE)\nreport on behalf of the Fermi GBM Team:\n\n\"At 14:07:22.27 UT on 6 March 2017, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 170306B (trigger 510502047 / 170306588),\nwhich was also detected by Fermi/LAT (Omodei et al., GCN 20826). The\nGBM on-ground location is consistent with the LAT position.\n\n\nThe trigger resulted in an Autonomous Repoint Request (ARR)\nby the GBM Flight Software owing to the high peak flux\nof the GRB. This ARR was accepted and the spacecraft slewed\nto the GBM in-flight location.\n\nThe GBM light curve shows multiple overlapping pulses\nwith a duration (T90) of about 18.7 s (50-300 keV).\nThe time-averaged spectrum from T0-3.8 s to T0+26.9 s is\nbest fit by a power law function with an exponential\nhigh-energy cutoff.  The power law index is -0.73 +/- 0.03 and\nthe cutoff energy, parameterized as Epeak, is 289 +/- 10 keV.\n\n\nThe event fluence (10-1000 keV) in this time interval is\n(3.07 +/- 0.06)E-5 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+8.7 s in the 10-1000 keV band\nis 12.4 +/- 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": 20827,
  "createdOn": 1488828775000,
  "email": "veresp@gmail.com",
  "subject": "GRB 170306B: Fermi GBM detection",
  "submitter": "Peter Veres at UAH  <veresp@gmail.com>",
  "eventId": "GRB 170306B"
}