General information
GRB 260530B was triggered by SVOM/GRM at 2026-05-30T06:00:05.600 UTC as a bright short burst candidate, but the notice flags that it may be associated with local transmitter/electron-belt effects and is not yet confirmed as astrophysical.
Wavelength coverage
- Gamma-rays/Hard X-rays: SVOM/GRM detection reported (15–5000 keV).
No observations were mentioned in X-rays, UV/optical/IR, radio, or other bands.
Lightcurve and spectrum
- GRM light curve described as a single symmetrical smooth pulse.
- Duration: T90 = 1.55 (+0.20/-0.15) s (15–5000 keV).
Redshift
What’s special vs typical
- Classified as a bright short-burst-like trigger, but explicitly noted as potentially associated with the NWC transmitter/artificial electron belt (possible non-astrophysical origin).