General information
GRB 260531A is reported as a bright uncatalogued X-ray transient detected by the MAXI/GSC nova alert system at 05:30:18 UT on 2026-05-31, localized near (RA, Dec) = (69.904 deg, -10.627 deg) (J2000).
Wavelength coverage
- X-ray: MAXI/GSC detection in 4.0–10.0 keV with average flux 230 ± 36 mCrab; no significant excess in adjacent transits (03:57 UT and 07:03 UT) with 20 mCrab upper limits each.
No observations are mentioned in gamma-ray, optical/UV, IR, radio, or neutrinos.
Lightcurve and spectrum
Redshift
What’s special vs typical