{
  "bibcode": "2020GCN.28340....1V",
  "body": "P. Veres, R. Hamburg and C. Meegan (all UAH)\nreport on behalf of the Fermi GBM Team:\n\n\"At 03:47:27.62 UT on 1 September 2020, the Fermi Gamma-Ray Burst Monitor\n(GBM)\ntriggered on GRB 200901A (trigger 620624852 / 200901158)\nwhich was also detected by the Swift/BAT (Simpson et al., GCN 28335).\nThe GBM on-ground location is consistent with the Swift position.\n\nThe event was classified as particle activity by the flight software, but\nit is in fact a GRB.\n\nThe angle from the Fermi LAT boresight at the GBM trigger time is 151\ndegrees.\n\nThe GBM light curve consists of overlapping pulses\nwith a duration (T90) of about 10.2 s (50-300 keV).\nThe time-averaged spectrum from T0-0.9 s to T0+10.4 s is\nbest fit by a power law function with an exponential\nhigh-energy cutoff.  The power law index is -1.52 +/- 0.09 and\nthe cutoff energy, parameterized as Epeak, is 410 +/- 150 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(9.4 +/- 0.54)E-6 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+3.8 s in the 10-1000 keV band\nis 11.2 +/- 0.96 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog:\nhttps://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html\n\nFor Fermi GBM data and info, please visit the official Fermi GBM Support\nPage:\nhttps://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"",
  "circularId": 28340,
  "createdOn": 1598983729000,
  "email": "veresp@gmail.com",
  "subject": "GRB 200901A: Fermi GBM observation",
  "submitter": "Peter Veres at UAH  <veresp@gmail.com>",
  "eventId": "GRB 200901A"
}