{
  "subject": "GRB 240331A: Fermi GBM Final Real-time Localization",
  "circularId": 35998,
  "createdOn": 1711929953063,
  "bibcode": "2024GCN.35998....1F",
  "submitter": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 23:55:19 UT on 31 Mar 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240331A (trigger 733622124.6772 / 240331997).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 31.4, Dec = 0.9 (J2000 degrees, equivalent to J2000 02h 05m, 0d 54'), with a statistical uncertainty of 5.8 degrees.\n\nThe angle from the Fermi LAT boresight is 62.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240331997/quicklook/glg_skymap_all_bn240331997.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/2024/bn240331997/quicklook/glg_healpix_all_bn240331997.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240331997/quicklook/glg_lc_medres34_bn240331997.gif\n\n",
  "eventId": "GRB 240331A",
  "submittedHow": "email"
}