{
  "bibcode": "2021GCN.30519....1P",
  "body": "S. Poolakkil (UAH) and C. Meegan (UAH)\nreport on behalf of the Fermi GBM Team:\n\n\"At 03:47:03.54 UT on 25 July 2021, the Fermi Gamma-Ray Burst Monitor (GBM)\ntriggered and located GRB 210725A (trigger 648877628 / 210725158)\nwhich was also detected by the Swift/BAT (Bernardini et al. 2021, GCN\n30501).\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 78\ndegrees.\n\nThe GBM light curve consists of a single peak followed by some\nextended emission with a duration (T90) of about 47 s (50-300 keV).\nThe time-averaged spectrum from T0-1.02 s to T0+9.21 s\nis best fit by a power law function with an exponential\nhigh-energy cutoff. The power law index is -0.37 +/- 0.22  and\nthe cutoff energy, parameterized as Epeak, is 460 +/- 104 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(3.14 +/- 0.35)E-06 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+0.64 s in the 10-1000 keV band\nis 2.0 +/- 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": 30519,
  "createdOn": 1627318080000,
  "email": "sp0076@uah.edu",
  "subject": "GRB 210725A: Fermi GBM detection",
  "submitter": "Suraj Poolakkil at UAH  <sp0076@uah.edu>",
  "eventId": "GRB 210725A"
}