General information
GRB 251219.11 was triggered by SVOM, and MASTER-Net (MASTER-OAFA) began rapid follow-up shortly after the trigger, reporting only optical upper limits so far.
Wavelength coverage
- Gamma-ray: SVOM trigger reported.
- Optical: MASTER-OAFA clear-band imaging starting ~58 s after trigger; non-detections with limits up to ~20.2 mag in the first few minutes.
No observations were mentioned for X-ray, ultraviolet, infrared, or radio.
Lightcurve and spectrum
- Optical upper limits (clear/unfiltered): limits of
19.2 mag (Tmid-T0 ~63–81 s), ~19.7–19.8 mag (104–131 s), and up to 20.1–20.2 mag (227–340 s).
Redshift
What’s special vs typical
- Very rapid, relatively deep optical constraints were obtained within the first few minutes after the SVOM trigger, but no optical counterpart is reported in this circular.