General information
IceCube Alert 260825A is a neutrino-alert follow-up field associated with trigger No. 44905242 at RA 06h 07m 48.00s, Dec +45d 43m 48.0s, with R=0.52 deg. MASTER-Tunka began observing the error box 7608 s after the trigger and reported no optical counterpart in the provided circular.
Wavelength coverage
- Neutrino: IceCube issued the alert for trigger No. 44905242.
- Optical: MASTER-Tunka observed the field starting at 2026-08-25 13:00:21 UT and reported upper limits, including a stated limit up to 17.1 mag and tabulated P- limits around 12.0-12.6 mag.
No radio, X-ray, gamma-ray, infrared, ultraviolet, or spectroscopic observations are mentioned.
Lightcurve and spectrum
- MASTER-Tunka observations began at T0+7608 s after the trigger, during twilight, at zenith distance 82 deg and Sun altitude -7.9 deg.
- The tabulated optical observations are 1 s P- exposures with limiting magnitudes mostly between 12.0 and 12.6 mag.
Redshift
What’s special vs typical