TITLE:   GCN CIRCULAR
NUMBER:  35641
SUBJECT: GRB 240127A: Fermi GBM Final Real-time Localization
DATE:    24/01/27 05:01:10 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 04:50:40 UT on 27 Jan 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240127A (trigger 728023845.52457 / 240127202).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 299.9, Dec = -62.8 (J2000 degrees, equivalent to J2000 19h 59m, -62d 47'), with a statistical uncertainty of 29.9 degrees.

The angle from the Fermi LAT boresight is 129.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240127202/quicklook/glg_skymap_all_bn240127202.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/bn240127202/quicklook/glg_healpix_all_bn240127202.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240127202/quicklook/glg_lc_medres34_bn240127202.gif