{
  "submittedHow": "web",
  "bibcode": "2025GCN.41895....1F",
  "format": "text/plain",
  "eventId": "GRB 250920A",
  "circularId": 41895,
  "createdOn": 1758344752820,
  "submitter": "Jacob Smith at Fermi-GBM Team <jrs0118@uah.edu>",
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\n\"At 02:54:06.82 UT on 20 September 2025, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 250920 (trigger 780029651/250920121).\n\nThe on-ground calculated location, using the Fermi GBM trigger data,\nis RA = 175.27, Dec = 48.96 (J2000 degrees, equivalent to J2000 11h 41m, +48d 57'),\nwith a statistical uncertainty of 1.00 degrees.\n\nThe angle from the Fermi LAT boresight is 88 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250920121/quicklook/glg_skymap_all_bn250920121.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/2025/bn250920121/quicklook/glg_healpix_all_bn250920121.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250920121/quicklook/glg_lc_medres34_bn250920121.gif\"",
  "subject": "GRB 250920A: Fermi GBM Final Localization"
}