TITLE:   GCN CIRCULAR
NUMBER:  35188
SUBJECT: GRB 231126A: Fermi GBM Final Real-time Localization
DATE:    23/11/26 01:23:00 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 01:12:22 UT on 26 Nov 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231126A (trigger 722653947.93232 / 231126050).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 277.4, Dec = 25.6 (J2000 degrees, equivalent to J2000 18h 29m, 25d 36'), with a statistical uncertainty of 6.7 degrees.

The angle from the Fermi LAT boresight is 91.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231126050/quicklook/glg_skymap_all_bn231126050.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/bn231126050/quicklook/glg_healpix_all_bn231126050.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231126050/quicklook/glg_lc_medres34_bn231126050.gif