{
  "bibcode": "2025GCN.40596....1F",
  "eventId": "GRB 250601A",
  "createdOn": 1748799608275,
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 17:29:35 UT on 1 Jun 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 250601A (trigger 770491780.538054 / 250601729).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 86.5, Dec = -55.7 (J2000 degrees, equivalent to J2000 05h 46m, -55d 42'), with a statistical uncertainty of 4.5 degrees.\n\nThe angle from the Fermi LAT boresight is 23.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250601729/quicklook/glg_skymap_all_bn250601729.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/bn250601729/quicklook/glg_healpix_all_bn250601729.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250601729/quicklook/glg_lc_medres34_bn250601729.gif\n",
  "subject": "GRB 250601A: Fermi GBM Final Real-time Localization",
  "submitter": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
  "circularId": 40596,
  "submittedHow": "email"
}