{
  "subject": "GRB 261113B: Fermi GBM Final Localization",
  "circularId": 46281,
  "createdOn": 1794700519435,
  "submitter": "rhamburg@usra.edu",
  "eventType": [
    "GRB",
    "Gamma-ray Transient"
  ],
  "submittedHow": "web",
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB.\n\n\"At 19:45:55.10 UT on 13 November 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 261113B (trigger 816291960/261113824).This trigger was initially classified as Distant Particles by the flight software, but is in fact a GRB.\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 168.2, Dec = 42.4 (J2000 degrees, equivalent to J2000 11h 12m 43.2s, +42d 21'), with a statistical uncertainty of 2.76 degrees.\n\nThe angle from the Fermi LAT boresight is 147 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn261113824/quicklook/glg_skymap_all_bn261113824.png\n\nThe HEALPix FITS file, including the estimated localization systematic, can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn261113824/quicklook/glg_healpix_all_bn261113824.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn261113824/quicklook/glg_lc_medres34_bn261113824.gif\"",
  "eventId": "GRB 261113B",
  "format": "text/plain"
}