16–20 Sept 2025
Africa/Johannesburg timezone

Optical and Radio Follow-up of Ultra-High-Energy Neutrino Source Candidates

19 Sept 2025, 08:30
30m
Invited Talk Active Galactic Nuclei AGN

Speaker

Yulia Sotnikova (Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS))

Description

In this report, we present SAO RAS radio/optical observations of high-energy neutrino candidates - bright blazars. Extensive research has shown that the arrival directions of ultra-high-energy (UHE) neutrinos statistically coincide with bright blazar positions, while the timing of neutrino events coincides with powerful synchrotron flares in these objects. AGN have emerged as compelling candidates for astrophysical neutrino sources and efficient proton accelerators. We further present the multi-wavelength features (radio to gamma-ray) of several UHE neutrino candidates across long timescales and during neutrino events.

Author

Yulia Sotnikova (Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS))

Co-author

Dr Valery Vlasyuk (Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS))

Presentation materials

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