TITLE:   GCN CIRCULAR
NUMBER:  34934
SUBJECT: GRB 231103A: Fermi GBM Final Real-time Localization
DATE:    23/11/03 14:52:04 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 LONG GRB

At 14:41:30 UT on 3 Nov 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231103A (trigger 720715295.24961 / 231103612).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 14.0, Dec = -55.3 (J2000 degrees, equivalent to J2000 00h 56m, -55d 17'), with a statistical uncertainty of 5.2 degrees.

The angle from the Fermi LAT boresight is 53.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231103612/quicklook/glg_skymap_all_bn231103612.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/bn231103612/quicklook/glg_healpix_all_bn231103612.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231103612/quicklook/glg_lc_medres34_bn231103612.gif