{
  "submitter": "A. Holzmann Airasca at University of Trento and INFN Bari <a.holzmannairasca@unitn.it>",
  "eventId": "GRB 250905B",
  "subject": "GRB 250905B: Fermi GBM Final Localization",
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\n\"At 08:14:40.87 UT on 05 September 2025, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 250905B (trigger 778752885/250905344).\n\nThe on-ground calculated location, using the Fermi GBM trigger data,\nis RA = 123.82, Dec = -19.65 (J2000 degrees, equivalent to J2000 8h 15m, -19d 38'),\nwith a statistical uncertainty of 11.91 degrees.\n\nThe angle from the Fermi LAT boresight is 90 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250905344/quicklook/glg_skymap_all_bn250905344.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/bn250905344/quicklook/glg_healpix_all_bn250905344.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250905344/quicklook/glg_lc_medres34_bn250905344.gif\"",
  "circularId": 41724,
  "createdOn": 1757071033853,
  "bibcode": "2025GCN.41724....1F",
  "submittedHow": "web",
  "format": "text/plain"
}