General information
GRB 260522B is a likely long-duration GRB triggered by Fermi/GBM at 2026-05-22 09:35:00.13 UTC, with prompt emission also detected by NuSTAR SINGS in the CsI anti-coincidence shields.
Wavelength coverage
- Gamma-rays / hard X-rays: Fermi/GBM detection and localization; NuSTAR shield prompt detection; SVOM/GRM detection noted.
- X-rays: NuSTAR CZT detectors reported no evidence above 100 keV.
No observations were mentioned in optical/UV, infrared, radio, or gravitational waves/neutrinos.
Lightcurve and spectrum
Redshift
What’s special vs typical