{
  "circularId": 34199,
  "eventId": "GRB 230709C",
  "body": "\nP. Veres  and C. Meegan (both UAH) report on behalf of\nthe Fermi Gamma-ray Burst Monitor Team:\n\n\"At 17:38:26.82 UT on 09 July 2023, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 230709C (trigger 710617111/230709735).\n\nThe on-ground calculated location, using the Fermi GBM trigger data (GCN #34198) is consistent with the location reported by Preis et al., GCN #34187.\n\nThe GBM light curve consists of a single emission episode with a duration (T90)\nof about 0.19 s (50-300 keV). The time-averaged spectrum\nfrom T0-0.06 to T0+0.19 s is best fit by\na power law function with an exponential high-energy cutoff.\nThe power law index is -0.01 +/- 0.07 and the cutoff energy,\nparameterized as Epeak, is 1050 +/- 50 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(6.3 +/- 0.1)E-06 erg/cm^2. The 64-ms peak photon flux measured\nstarting from T0+0.0 s in the 10-1000 keV band is 58 +/- 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 Page:\nhttps://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"",
  "createdOn": 1689019944591,
  "submitter": "Peter Veres at University of Alabama in Huntsville <veresp@gmail.com>",
  "subject": "GRB 230709C: Fermi GBM Detection",
  "bibcode": "2023GCN.34199....1V"
}