TITLE:   GCN CIRCULAR
NUMBER:  34255
SUBJECT: GRB 230725A: Fermi GBM Final Real-time Localization
DATE:    23/07/25 10:43:21 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 10:32:50 UT on 25 Jul 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230725A (trigger 711973975.87891 / 230725439).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 207.2, Dec = 4.9 (J2000 degrees, equivalent to J2000 13h 48m, 4d 54'), with a statistical uncertainty of 4.5 degrees.

The angle from the Fermi LAT boresight is 31.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230725439/quicklook/glg_skymap_all_bn230725439.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/bn230725439/quicklook/glg_healpix_all_bn230725439.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230725439/quicklook/glg_lc_medres34_bn230725439.gif