General information
SVOM GRB 260903.53, trigger No. 1788439007, is reported at RA 01h42m14.86s, Dec +11d13m58.1s with R=0.198. MASTER-Tunka followed the field starting 9200 s after the trigger and found no optical transient in the reported observations.
Wavelength coverage
- Optical: MASTER-Tunka obtained clear/unfiltered 60 s exposures beginning at 2026-09-03 15:10:07 UT, reporting upper limits up to 18.8 mag.
No observations are mentioned in gamma-ray details beyond the SVOM trigger, X-ray, ultraviolet, infrared, radio, neutrino, or gravitational-wave bands.
Lightcurve and spectrum
- MASTER-Tunka observations span Tmid-T0 = 9230 s to 11412 s.
- Reported clear-band limiting magnitudes range from 13.9 to 18.8 mag.
- No optical detection, fading behavior, or spectrum is reported.
Redshift
What’s special vs typical