{
  "bibcode": "2021GCN.30738....1L",
  "body": "S. Lesage (UAH), R. Dunwoody (UCD), J. Mangan (UCD) and C. Meegan (UAH)\nreport on behalf of\nthe Fermi Gamma-ray Burst Monitor Team:\n\n\"At 09:59:24 UT on 27 August 2021, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 210827A (trigger 651751169/210827416)\nwhich was also detected by Swift/BAT-GUANO (James DeLaunay et al. 2021, GCN\n30732).\nThe Fermi GBM Final Real-time Localization (GCN 30724) is consistent with\nthe Swift/BAT-GUANO position.\n\nThe angle from the Fermi LAT boresight is 42 degrees.\n\nThe GBM light curve consists of a single emission episode with a duration\n(T90)\nof about 9 s (10-1000 keV). The time-averaged spectrum\nfrom T0-2.0 to T0+4.1 s is best fit by\na simple power law function with index -1.6 +/- 0.1.\n\nThe event fluence (10-1000 keV) in this time interval is\n(7 +/- 1)E-07 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0-2.5 s in the 10-1000 keV band is 1.7 +/- 0.2 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": 30738,
  "createdOn": 1630195081000,
  "email": "sp0076@uah.edu",
  "subject": "GRB 210827A: Fermi GBM Observation",
  "submitter": "Suraj Poolakkil at UAH  <sp0076@uah.edu>",
  "eventId": "GRB 210827A"
}