General information
GRB 260520B was detected by Fermi/GBM at 2026-05-20 09:35:52.73 UT and also reported by SVOM/GRM at T0=2026-05-20T09:35:53. The GBM on-ground localization is RA=346.68 deg, Dec=39.68 deg with a quoted statistical uncertainty of about 14 deg.
Wavelength coverage
- Gamma-ray: Detected by Fermi/GBM; detected by SVOM/GRM (15–5000 keV); LAT boresight angle reported (21 deg).
- X-ray:
- Optical/UV: SVOM/ECLAIRs noted to be outside its FoV for this position.
- Radio:
No observations are mentioned here for X-ray, optical/UV (beyond ECLAIRs FoV statement), infrared, radio, or TeV.
Lightcurve and spectrum
- SVOM/GRM reports a main episode with a single peak and T90 = 6.0 (+7.0/-5.0) s in 15–5000 keV.
Redshift
What’s special vs typical