{
  "createdOn": 1794161673396,
  "eventType": [
    "GRB",
    "Gamma-ray Transient"
  ],
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of atrigg2@lsu.edu",
  "circularId": 46197,
  "editedOn": 1794183341266,
  "version": 2,
  "submitter": "atrigg2@lsu.edu",
  "format": "text/plain",
  "body": "A. C. Trigg (NPP ORAU, NASA MSFC) reports on behalf of the Fermi Gamma-ray Burst Monitor Team:\n\n\"At 01:13:19.35 UT on 08 November 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 261108A (trigger 815793204/261108051), which was also detected by SVOM/ECLAIRs and SVOM/GRM (Xie et al. 2026, GCN 46186).\nThe Fermi GBM real-time localization (GCN 46185) is consistent with the SVOM/ECLAIRS position.\n\nThe angle from the Fermi LAT boresight is 40 degrees.\n\nThe GBM light curve consists of a single emission with a duration (T90) of about 24 s (50-300 keV). The time-averaged spectrum from T0-2.2 to T0+17.2 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -1.26 +/- 0.04 and the cutoff energy, parameterized as Epeak, is 87 +/- 4 keV.\n\nThe event fluence (10-1000 keV) in this time interval is (8.1 +/- 0.6)E-07 erg/cm^2. The 1-sec peak photon flux measured starting from T0-0.3 s in the 10-1000 keV band is 3.1 +/- 0.2 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog: https://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html\n\nFor Fermi GBM data and info, please visit the official Fermi GBM Support Page: https://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"",
  "subject": "GRB 261108A: Fermi GBM Observation",
  "eventId": "GRB 261108A",
  "submittedHow": "web"
}