{
  "bibcode": "2022GCN.32594....1F",
  "body": "The Fermi GBM team reports the detection of a likely Long GRB.\n\n\"At 05:36:20.95 UT on 27 September 2022, the Fermi Gamma-Ray Burst Monitor\n(GBM) triggered and located GRB220927A (trigger 685949785 / 220927234).\n\nThe on-ground calculated location, using the GBM trigger data, is RA =\n96.2, DEC = -22.5 (J2000 degrees, equivalent to 6h 24m, -22d 30'), with a\nstatistical uncertainty of 1 degrees (radius, 1-sigma containment,\nstatistical only; there is additionally a systematic error which we have\ncharacterized as a core-plus-tail model, with 90% of GRBs having a 3.7 deg\nerror and a small tail suffering a larger than 10 deg systematic error.\n[Connaughton et al. 2015, ApJS, 216, 32] ).\n\nThe angle from the Fermi LAT boresight at the GBM trigger time is 57\ndegrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220927234/quicklook/glg_skymap_all_bn220927234.png\n\nThe HEALPix FITS file, including the estimated localization systematic, can\nbe found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220927234/quicklook/glg_healpix_all_bn220927234.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220927234/quicklook/glg_lc_medres34_bn220927234.gif",
  "circularId": 32594,
  "createdOn": 1664289589000,
  "email": "joseph.mangan@ucdconnect.ie",
  "subject": "GRB 220927A: Fermi GBM Final Localization",
  "submitter": "Joe Mangan at UCD  <joseph.mangan@ucdconnect.ie>",
  "eventId": "GRB 220927A"
}