{
  "circularId": 40927,
  "body": "O. Mukherjee (USRA) and C. Meegan (UAH) report on behalf of\nthe Fermi Gamma-ray Burst Monitor Team:\n\n\"At 21:06:43.10 UT on 02 July 2025, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 250702F (trigger 773183208/250702880).\nwhich was also detected by Swift BAT (N. J. Klingler et al. 2025), GOTO (A. Kumar et al. 2025, GCN 40896), AKO (Mohammad Odeh et al. 2025, GCN 40925).\nA spectroscopic redshift of z = 1.52 was reported by GTC/OSIRIS (A. de Ugarte Postigo et al. 2025, GCN 40901) \n\nThe Fermi GBM on-ground location is consistent with the Swift BAT position.\n\nThe angle from the Fermi LAT boresight is 43 degrees.\n\nThe GBM light curve consists of multiple pulses with a duration (T90)\nof about 54 s (50-300 keV). The time-averaged spectrum\nfrom T0-29 to T0+48 s is best fit by\na band function with alpha = -1.34 +/- 0.06 and beta = -1.78 +/- 0.09 and the cutoff energy,\nparameterized as Epeak, is 403 +/- 148 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(1.45 +/- 0.03)E-05 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+38 s in the 10-1000 keV band is 9.7 +/- 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 Page:\nhttps://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"",
  "eventId": "GRB 250702F",
  "submittedHow": "web",
  "format": "text/plain",
  "bibcode": "2025GCN.40927....1M",
  "subject": "GRB 250702F: Fermi GBM Observation",
  "submitter": "oindabimukherjee@gmail.com",
  "createdOn": 1751588721911
}