GCN Circular 34883
The Fermi GBM team reports the detection of a likely SHORT GRB "At 06:46:59.59 UT on 25 October 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231025A (trigger 719909224/231025283). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 190.96, Dec = -53.08 (J2000 degrees, equivalent to J2000 12h 44m, -53d 05'), with a statistical uncertainty of 16.32 degrees. The angle from the Fermi LAT boresight is 113 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231025283/quicklook/glg_skymap_all_bn231025283.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231025283/quicklook/glg_healpix_all_bn231025283.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231025283/quicklook/glg_lc_medres34_bn231025283.gif"