{
  "submitter": "Rushikesh  Sonawane  at IISER, TVM <rushikesh23@iisertvm.ac.in>",
  "body": "R. Sonawane (IISER, TVM) reports on behalf of the Fermi Gamma-ray Burst Monitor Team:\n\n\"At 09:52:44.91 UT on 08 February 2026, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 260208B (trigger 792237169/260208412).\nwhich was also detected by Fermi LAT (A. H. Airasca et al. 2026, GCN 43647).\nThe Fermi GBM final real-time Localization (GCN 43638) is consistent with the Fermi LAT position.\n\n\nThe angle from the Fermi LAT boresight is 16 degrees.\n\nThe GBM light curve consists of two emission episodes with multiple spikes for a duration (T90)\nof about 145 s (50-300 keV). The time-averaged spectrum\nfrom T0-8.2 to T0+172.0 s is best fit by\na Band function with Epeak = 855 +/- 61 keV,\nalpha = -1.0 +/- 0.02, and beta = -2.12 +/- 0.08.\n\nThe event fluence (10-1000 keV) in this time interval is\n(9.1 +/- 0.1)E-05 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+14 s in the 10-1000 keV band is 23 +/- 0.4 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 260208B",
  "createdOn": 1770572297244,
  "subject": "GRB 260208B: Fermi GBM Detection",
  "circularId": 43649,
  "submittedHow": "web",
  "bibcode": "2026GCN.43649....1S",
  "format": "text/plain"
}