//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 26104 SUBJECT: GRB 191031B: Fermi GBM Final Real-time Localization DATE: 19/10/31 15:25:13 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 15:14:54 UT on 31 Oct 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 191031B (trigger 594227699.816476 / 191031635). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 31.8, Dec = -14.2 (J2000 degrees, equivalent to J2000 02h 07m, -14d 11'), with a statistical uncertainty of 14.3 degrees. The angle from the Fermi LAT boresight is 70.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191031635/quicklook/glg_skymap_all_bn191031635.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191031635/quicklook/glg_healpix_all_bn191031635.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191031635/quicklook/glg_lc_medres34_bn191031635.gif