General information
GRB 251211A was detected by the Fermi Gamma-ray Burst Monitor (GBM) at 02:40:59 UT on 2025-12-11 and reported as a likely long GRB with an initial on-ground localization.
Wavelength coverage
- Gamma-rays: Detected and localized by Fermi/GBM.
No observations were mentioned at GeV/TeV energies, X-rays, UV, optical/NIR, or radio.
Lightcurve and spectrum
Redshift
What’s special vs typical