{
  "eventId": "GRB 250521C",
  "body": "The Fermi GBM team reports the detection of a likely SHORT GRB\n\n\"At 13:31:01.20 UT on 21 May 2025, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 250521C (trigger 769527066/250521563).\n\nThe on-ground calculated location, using the Fermi GBM trigger data,\nis RA = 105.00, Dec = 65.63 (J2000 degrees, equivalent to J2000 7h 0m, +65d 37'),\nwith a statistical uncertainty of 16.05 degrees.\n\nThe angle from the Fermi LAT boresight is 91 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250521563/quicklook/glg_skymap_all_bn250521563.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/bn250521563/quicklook/glg_healpix_all_bn250521563.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250521563/quicklook/glg_lc_medres34_bn250521563.gif\"",
  "format": "text/plain",
  "submitter": "Lorenzo Scotton at UAH <lscottongcn@outlook.com>",
  "createdOn": 1747852569820,
  "subject": "GRB 250521C: Fermi GBM Final Localization",
  "bibcode": "2025GCN.40515....1F",
  "submittedHow": "web",
  "circularId": 40515
}