GCN Circular 40648

The Fermi GBM team reports the detection of a likely LONG GRB.

"At 14:00:55.64 UT on 07 June 2025, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 250607A (trigger 770997660/250607584).

The on-ground calculated location, using the Fermi GBM trigger data,
is RA = 243.84, Dec = -24.71 (J2000 degrees, equivalent to J2000 16h 15m, -24d 42'),
with a statistical uncertainty of 10.15 degrees.

The angle from the Fermi LAT boresight is 90 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250607584/quicklook/glg_skymap_all_bn250607584.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250607584/quicklook/glg_healpix_all_bn250607584.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250607584/quicklook/glg_lc_medres34_bn250607584.gif"