TITLE:   GCN CIRCULAR
NUMBER:  35426
SUBJECT: GRB 231224A: Fermi GBM Final Real-time Localization
DATE:    23/12/24 20:59:57 GMT
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 SHORT GRB

At 20:49:15 UT on 24 Dec 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231224A (trigger 725143760.994196 / 231224868).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 102.3, Dec = -71.2 (J2000 degrees, equivalent to J2000 06h 49m, -71d 12'), with a statistical uncertainty of 11.9 degrees.

The angle from the Fermi LAT boresight is 24.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231224868/quicklook/glg_skymap_all_bn231224868.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/bn231224868/quicklook/glg_healpix_all_bn231224868.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231224868/quicklook/glg_lc_medres34_bn231224868.gif