GCN Circular 34969
Subject
GRB 231108A: Fermi GBM Final Real-time Localization
Date
2023-11-08T21:14:37Z (6 months ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
Via
email
The Fermi GBM team reports the detection of a likely LONG GRB
At 21:03:09 UT on 8 Nov 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231108A (trigger 721170194.442402 / 231108877).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 104.8, Dec = 50.5 (J2000 degrees, equivalent to J2000 06h 59m, 50d 30'), with a statistical uncertainty of 18.6 degrees.
The angle from the Fermi LAT boresight is 102.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231108877/quicklook/glg_skymap_all_bn231108877.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/bn231108877/quicklook/glg_healpix_all_bn231108877.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231108877/quicklook/glg_lc_medres34_bn231108877.gif
