{
  "circularId": 39141,
  "submittedHow": "web",
  "createdOn": 1738681139510,
  "eventId": "GRB 250204B",
  "format": "text/plain",
  "bibcode": "2025GCN.39141....1F",
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 06:41:14.00 UT on 04 February 2025, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 250204B (trigger 760344078/250204279).\n\nThe on-ground calculated location, using the Fermi GBM trigger data,\nis RA = 2.35, Dec = 29.70 (J2000 degrees, equivalent to J2000 0h 9m, +29d 41'),\nwith a statistical uncertainty of 2.80 degrees.\n\nThe angle from the Fermi LAT boresight is 124 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250204279/quicklook/glg_skymap_all_bn250204279.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/bn250204279/quicklook/glg_healpix_all_bn250204279.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250204279/quicklook/glg_lc_medres34_bn250204279.gif",
  "subject": "GRB 250204B: Fermi GBM Final Localization",
  "submitter": "Marianna Dafčíková at Masaryk University <500025@mail.muni.cz>"
}