General information
GRB 260502A is reported as a likely short GRB, detected by Fermi/GBM and also observed by GECAM-B and SVOM/GRM around 2026-05-02 05:01:00 UTC. Fermi/GBM provides a final sky localization centered at RA=283.76 deg, Dec=57.62 deg with 13.77 deg statistical uncertainty.
Wavelength coverage
- Gamma-rays / hard X-rays: Detected by Fermi/GBM; observed by GECAM-B (70–6000 keV) and SVOM/GRM (15–5000 keV), with spectral/fluence information reported by SVOM/GRM.
- Other bands: None mentioned.
Bands with no observations mentioned: X-ray (soft), UV, optical/NIR, radio, gravitational waves, neutrinos.
Lightcurve and spectrum
- GECAM-B: single pulse; T90 = 0.40 (+0.14/-0.08) s (70–6000 keV).
- SVOM/GRM: single pulse; T90 = 0.61 (+0.28/-0.15) s (15–5000 keV).
- SVOM/GRM: time-averaged spectrum from T0-0.04 to T0+0.01 s fit by a power law with index -1.12 +/- 0.10; fluence (10–1000 keV) = (2.3 +0.37/-0.33)E-07 erg/cm^2.
Redshift
What’s special vs typical