{
  "bibcode": "2021GCN.30620....1P",
  "body": "S. Poolakkil (UAH) and C. Meegan (UAH)\nreport on behalf of the Fermi GBM Team:\n\n\"At 22:55:24.31 UT on 7 July 2021, the Fermi Gamma-Ray Burst Monitor (GBM)\ntriggered and located GRB 210807C (trigger 650069729 / 210807955)\nwhich was also detected by the Swift/BAT (Lien et al. 2021, GCN 30610).\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 61\ndegrees.\n\nThe GBM light curve consists of multiple peaks followed by some\nextended emission with a duration (T90) of about 125 s (50-300 keV).\nThe time-averaged spectrum from T0 s to T0+94.2 s\nis best fit by a Band function, with Epeak = 170 +/- 28 keV,\nalpha = -1.08 +/- 0.06  and beta = -1.61 +/- 0.01.\n\nThe event fluence (10-1000 keV) in this time interval is\n(56.43 +/- 0.54)E-06 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+8.64 s in the 10-1000 keV band\nis 7.2 +/- 0.3 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB\nCatalog:https://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html\n\nFor Fermi GBM data and info, please visit the official Fermi GBM\nSupport Page:https://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"",
  "circularId": 30620,
  "createdOn": 1628463517000,
  "email": "sp0076@uah.edu",
  "subject": "GRB 210807C: Fermi GBM detection",
  "submitter": "Suraj Poolakkil at UAH  <sp0076@uah.edu>",
  "eventId": "GRB 210807C"
}