TITLE:   GCN CIRCULAR
NUMBER:  34924
SUBJECT: GRB 231101A: Fermi GBM Final Real-time Localization
DATE:    23/11/01 02:33:51 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 02:23:16 UT on 1 Nov 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231101A (trigger 720498201.799648 / 231101099).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 137.1, Dec = 13.3 (J2000 degrees, equivalent to J2000 09h 08m, 13d 18'), with a statistical uncertainty of 13.2 degrees.

The angle from the Fermi LAT boresight is 86.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231101099/quicklook/glg_skymap_all_bn231101099.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/bn231101099/quicklook/glg_healpix_all_bn231101099.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231101099/quicklook/glg_lc_medres34_bn231101099.gif