GCN Circular 45167
Subject
GRB 260715A: Fermi GBM Final Real-time Localization
Event
Date
2026-07-15T11:20:53Z (2 days ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
Via
email
The Fermi GBM team reports the detection of a likely LONG GRB
At 11:10:14 UT on 15 Jul 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260715A (trigger 805806619.33651 / 260715465).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 157.0, Dec = 22.1 (J2000 degrees, equivalent to J2000 10h 28m, 22d 06'), with a statistical uncertainty of 8.0 degrees.
The angle from the Fermi LAT boresight is 72.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260715465/quicklook/glg_skymap_all_bn260715465.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/bn260715465/quicklook/glg_healpix_all_bn260715465.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260715465/quicklook/glg_lc_medres34_bn260715465.gif