{
  "bibcode": "2019GCN.23953....1V",
  "body": "P. Veres and C. Meegan (both UAH)\nreport on behalf of the Fermi GBM Team:\n\n\"At 14:23:37.601 UT on 11 March 2019, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 190311A (trigger 574007022 / 190311600),\nwhich was also detected by the Swift/BAT\n(Troja et al., GCN 23946). The GBM on-ground location is consistent with\nthe Swift position.\n\nThe angle from the Fermi LAT boresight at the GBM trigger time is 128\ndegrees.\n\nThe GBM light curve consists of a single peak\nwith a duration (T90) of about 12.5 s (50-300 keV).\nThe time-averaged spectrum from T0-4.1 s to T0+3.1 s is\nadequately fit by a simple power law function with index 1.86 +/- 0.08.\n\nThe event fluence (10-1000 keV) in this time interval is\n(1.40 +/- 0.18)E-6 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0-2.75 s in the 10-1000 keV band\nis 3.00 +/- 0.35 ph/s/cm^2.\n\nA power law function with an exponential\nhigh-energy cutoff fits the spectrum equally well\nwith Epeak= 89 +/- 34 keV and alpha = -1.51 +/- 0.25.\n\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 23953,
  "createdOn": 1552356553000,
  "email": "veresp@gmail.com",
  "subject": "GRB 190311A: Fermi GBM observation",
  "submitter": "Peter Veres at UAH  <veresp@gmail.com>",
  "eventId": "GRB 190311A"
}