{
  "bibcode": "2020GCN.26671....1G",
  "body": "GRB 200107B: Fermi GBM observation\n\nS. Lesage (UAH) and C. Meegan (UAH)\nreport on behalf of the Fermi GBM Team:\n\n\"At 19:26:22.81 UT on 07 January 2020, the Fermi Gamma-Ray Burst Monitor\n(GBM)\ntriggered and located GRB 200107B (trigger 600117987 / 200107810),\nwhich was also detected by the Swift/BAT (Bernardini et al. 2020, GCN\n26661).\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 47\ndegrees.\n\nThe GBM light curve shows a complex, multi-peaked structure\nwith a duration (T90) of about 81 s (50-300 keV).\nThe time-averaged spectrum from T0+4 s to T0+44 s is\nbest fit by a power law function with an exponential\nhigh-energy cutoff. The power law index is -1.1 +/- 0.1 and\nthe cutoff energy, parameterized as Epeak, is 412 +/- 138 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(1.29 +/- 0.15)E-05 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+41.0 s in the 10-1000 keV band is 3.3 +/- 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:\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": 26671,
  "createdOn": 1578505654000,
  "email": "sjl0014@uah.edu",
  "subject": "GRB 200107B: Fermi GBM observation",
  "submitter": "Stephen Lesage at Fermi-GBM Team  <sjl0014@uah.edu>",
  "eventId": "GRB 200107B"
}