{
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\n\"At 09:35:52.73 UT on 20 May 2026, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB260520B (trigger 800962557/260520400).\n\nThe on-ground calculated location, using the Fermi GBM trigger data,\nis RA = 346.68, Dec = 39.68 (J2000 degrees, equivalent to J2000 23h 6m, -39d 40'),\nwith a statistical uncertainty of 14 degrees.\n\nThe angle from the Fermi LAT boresight is 21 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260520400/quicklook/glg_skymap_all_bn260520400.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/bn260520400/quicklook/glg_healpix_all_bn260520400.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260520400/quicklook/glg_lc_medres34_bn260520400.gif\"",
  "bibcode": "2026GCN.44676....1F",
  "eventId": "GRB 260520B",
  "submitter": "Cuán de Barra at UCD <cuan.debarra@ucdconnect.ie>",
  "subject": "GRB 260520B: Fermi GBM Final Localization",
  "submittedHow": "web",
  "format": "text/plain",
  "circularId": 44676,
  "createdOn": 1779300048957
}