General information
GRB 251231.57 was reported as an SVOM-triggered GRB (trigger No. 1767188879) with an initial position near RA=18h28m56.90s, Dec=+11d21m52.2s (J2000) and an error radius R≈1.
Wavelength coverage
- Gamma-rays: SVOM trigger reported for GRB 251231.57.
- Optical: MASTER-Tunka (MASTER-Net) imaged the error region at ~3.35×10^4 s after trigger and reported only upper limits in clear band (C) of ~16.2–16.6 mag.
No observations were mentioned in X-ray, UV, IR, mm/sub-mm, radio, or neutrinos/GW in the provided circular(s).
Lightcurve and spectrum
Redshift
What’s special vs typical