{
  "bibcode": "2020GCN.27239....1B",
  "body": "E. Bissaldi (Politecnico and INFN Bari)\nreports on behalf of the Fermi GBM Team:\n\n\n\"At 07:20:08.70 UT on 27 February 2020, the Fermi Gamma-Ray Burst Monitor (GBM)\ntriggered and located GRB 200227A (trigger 604480813 / 200227306),\nwhich was also detected by the Swift/BAT (Laha et al. 2020, GCN 27234).\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 19 degrees.\n\nThe GBM light curve shows a single broad peak\nwith a duration (T90) of about 24 s (50-300 keV).\nThe time-averaged spectrum from T0 to T0+24 s is\nadequately fit by a Band function with\nEpeak = 139 +/- 10 keV, alpha = -0.95 +/- 0.05,\nand beta = -2.28 +/- 0.11.\n\nThe event fluence (10-1000 keV) in this time interval is\n(1.41  +/- 0.04)E-05 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+7.1 s in the 10-1000 keV band\nis 8.8 +/- 0.4 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 Page:\nhttps://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"",
  "circularId": 27239,
  "createdOn": 1582813193000,
  "email": "elisabetta.bissaldi@ba.infn.it",
  "subject": "GRB 200227A: Fermi GBM observation",
  "submitter": "Elisabetta Bissaldi at INFN,Bari  <elisabetta.bissaldi@ba.infn.it>",
  "eventId": "GRB 200227A"
}