{
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 06:05:44 UT on 20 Mar 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 250320A (trigger 764143549.57948 / 250320254).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 263.0, Dec = 47.3 (J2000 degrees, equivalent to J2000 17h 32m, 47d 17'), with a statistical uncertainty of 1.2 degrees.\n\nThe angle from the Fermi LAT boresight is 105.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250320254/quicklook/glg_skymap_all_bn250320254.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/bn250320254/quicklook/glg_healpix_all_bn250320254.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250320254/quicklook/glg_lc_medres34_bn250320254.gif\n",
  "submitter": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
  "submittedHow": "email",
  "eventId": "GRB 250320A",
  "circularId": 39789,
  "subject": "GRB 250320A: Fermi GBM Final Real-time Localization",
  "bibcode": "2025GCN.39789....1F",
  "createdOn": 1742451377362
}