GCN Circular 35170
Subject
GRB 231123B: Fermi GBM Final Real-time Localization
Date
2023-11-23T19:35:41Z (5 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 19:25:21 UT on 23 Nov 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231123B (trigger 722460326.50637 / 231123809).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 160.4, Dec = -68.9 (J2000 degrees, equivalent to J2000 10h 41m, -68d 54'), with a statistical uncertainty of 6.1 degrees.
The angle from the Fermi LAT boresight is 104.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231123809/quicklook/glg_skymap_all_bn231123809.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/bn231123809/quicklook/glg_healpix_all_bn231123809.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231123809/quicklook/glg_lc_medres34_bn231123809.gif
