GCN Circular 35608
Subject
GRB 240123B: Fermi GBM Final Real-time Localization
Date
2024-01-23T17:58:30Z (10 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 17:48:03 UT on 23 Jan 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240123B (trigger 727724888.218344 / 240123742).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 312.7, Dec = 17.3 (J2000 degrees, equivalent to J2000 20h 50m, 17d 18'), with a statistical uncertainty of 6.9 degrees.
The angle from the Fermi LAT boresight is 51.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240123742/quicklook/glg_skymap_all_bn240123742.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240123742/quicklook/glg_healpix_all_bn240123742.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240123742/quicklook/glg_lc_medres34_bn240123742.gif