[vsnet-grb-info 24008] GRB 191031C: Fermi GBM Final Real-time Localization

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  26107
SUBJECT: GRB 191031C: Fermi GBM Final Real-time Localization
DATE:    19/10/31 18:53:33 GMT
FROM:    Fermi GBM Team at MSFC/Fermi-GBM  <do_not_reply at GIOC.nsstc.nasa.gov>

The Fermi GBM team reports the detection of a likely LONG GRB

At 18:43:16 UT on 31 Oct 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 191031C (trigger 594240201.70685 / 191031780).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 120.8, Dec = -59.6 (J2000 degrees, equivalent to J2000 08h 03m, -59d 36'), with a statistical uncertainty of 1.6 degrees.

The angle from the Fermi LAT boresight is 19.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191031780/quicklook/glg_skymap_all_bn191031780.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/bn191031780/quicklook/glg_healpix_all_bn191031780.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191031780/quicklook/glg_lc_medres34_bn191031780.gif