TITLE:   GCN CIRCULAR
NUMBER:  44116
SUBJECT: GRB 260325A: Fermi GBM Final Localization
DATE:    26/03/26 02:06:55 GMT
FROM:    Suman Bala at USRA <sumanbala2210@gmail.com>

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

"At 23:39:37.55 UT on 25 March 2026, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 260325A (trigger 796174782/260325986).

The on-ground calculated location, using the Fermi GBM trigger data,
is RA = 113.3, Dec = -59.7 (J2000 degrees, equivalent to J2000 7h 33m, -59d 43'),
with a statistical uncertainty of 3.2 degrees.

The angle from the Fermi LAT boresight is 134 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260325986/quicklook/glg_skymap_all_bn260325986.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260325986/quicklook/glg_healpix_all_bn260325986.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260325986/quicklook/glg_lc_medres34_bn260325986.gif"