General information
GRB 260313A was a Fermi/GBM trigger at 12:00:28.58 UT on 13 Mar 2026, initially reported as a (long/short) GRB with subsequent localization correction. A later GBM report states the trigger is unlikely to be a GRB and its nature is uncertain.
Wavelength coverage
- Gamma-ray: Fermi GBM trigger and localization products reported.
- High-energy gamma-ray: angle from the Fermi LAT boresight reported (no LAT detection claimed).
- Optical: MASTER-Net observations reported only upper limits in unfiltered (C) images.
No X-ray, UV, infrared, radio, neutrino, or gravitational-wave observations were mentioned.
Lightcurve and spectrum
Redshift
What’s special vs typical