GCN Circular 26104
Subject
GRB 191031B: Fermi GBM Final Real-time Localization
Date
2019-10-31T15:25:13Z (5 years ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
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