{
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 06:39:30 UT on 31 Jan 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260131A (trigger 791534375.436908 / 260131277).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 21.9, Dec = 26.9 (J2000 degrees, equivalent to J2000 01h 27m, 26d 53'), with a statistical uncertainty of 1.8 degrees.\n\nThe angle from the Fermi LAT boresight is 104.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260131277/quicklook/glg_skymap_all_bn260131277.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/bn260131277/quicklook/glg_healpix_all_bn260131277.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260131277/quicklook/glg_lc_medres34_bn260131277.gif\n",
  "eventId": "GRB 260131A",
  "subject": "GRB 260131A: Fermi GBM Final Real-time Localization",
  "createdOn": 1769842208998,
  "circularId": 43579,
  "submitter": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
  "submittedHow": "email",
  "bibcode": "2026GCN.43579....1F"
}