Directional association of TeV to PeV astrophysical neutrinos with active galaxies hosting compact radio jets

We have shown recently that high-energy neutrinos above 200 TeV detected by IceCube are produced within several parsecs in the central regions of radio-bright active galactic nuclei (AGNs). To independently test this result and to extend the analysis to a wider energy range, we use here public data for all energies from seven years of IceCube observations. The IceCube point-source likelyhood map is analyzed against positions of AGNs from a large complete sample selected by their compact radio flux density. The latter analysis delivers $3.0\sigma$ significance with the combined post-trial significance of both studies being $4.1\sigma$. The correlation is driven by a large number of AGNs. Together with fainter but physically similar sources not included in the sample, these radio-bright quasars may explain the entire IceCube astrophysical neutrino flux as derived from muon-track analyses. The neutrinos can be produced in interactions of relativistic protons with X-ray self-Compton photons in parsec-scale AGN jets.