{
  "format": "text/plain",
  "createdOn": 1779259646850,
  "subject": "GRB 260520A: Fermi GBM Final Localization",
  "circularId": 44674,
  "eventId": "GRB 260520A",
  "submitter": "Lorenzo Scotton at UAH <lscottongcn@outlook.com>",
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\n\"At 01:24:47.42 UT on 20 May 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260520A (trigger 800933092/260520059).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 191.01, Dec = -34.56 (J2000 degrees, equivalent to J2000 12h 44m, -34d 33’), with a statistical uncertainty of 14 degrees.\n\nThe angle from the Fermi LAT boresight is 114 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260520059/quicklook/glg_skymap_all_bn260520059.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/bn260520059/quicklook/glg_healpix_all_bn260520059.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260520059/quicklook/glg_lc_medres34_bn260520059.gif\"",
  "submittedHow": "web",
  "bibcode": "2026GCN.44674....1F"
}