{
  "bibcode": "2018GCN.23320....1V",
  "body": "A. von Kienlin (MPE) reports on behalf of the Fermi GBM Team:\n\n\"At 05:55:59.39 UT on 10 October 2018, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 181010A (trigger 560843764 / 181010247),\nwhich was also detected by the Swift/BAT (Melandri et al. 2018, GCN 23309).\nThe GBM on-ground location is consistent with the Swift position.\n\nThe angle from the Fermi LAT boresight at the GBM trigger time is 48.1\ndegrees.\n\nThe GBM light curve shows two structured pulses followed a weak tail with\nan overall duration (T90) of about 60 s (50-300 keV). The time-averaged\nspectrum\nfrom T0-0.256s to T0+1.280s is best fit by a power law function with an\nexponential\nhigh-energy cutoff.  The power law index is -0.8 +/- 0.2 and\nthe cutoff energy, parameterized as Epeak, is 280 +/- 80 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(6.13 +/- 0.98)E-07 erg/cm^2. The 1.024 sec peak photon flux measured\nstarting from T0-0.128 s in the 10-1000 keV band\nis 3.35 +/- 0.29 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 23320,
  "createdOn": 1539200091000,
  "email": "veresp@gmail.com",
  "subject": "GRB 181010A: Fermi GBM observation",
  "submitter": "Peter Veres at UAH  <veresp@gmail.com>",
  "eventId": "GRB 181010A"
}