We review and discuss recent results on the search for correlations between astrophysical
neutrinos and γ-ray-detected sources, with many extragalactic studies reporting potential …

In theoretical models for the electromagnetic launching of astrophysical jets, a helical
magnetic (B)-field component is generated through the winding up of an initial longitudinal …

Neutrinos are the most elusive particles in the universe, capable of traveling nearly
unimpeded across it. Despite the vast amount of data collected, a long-standing and …

Evidence for bright-radio blazars being high-energy neutrino sources was found in recent
years. However, specifics of how and where these particles get produced still need to be …

The blazar PKS 0735+ 178 is possibly associated with multiple neutrino events observed by
the IceCube, Baikal, Baksan, and KM3NeT neutrino telescopes while it was flaring in the γ …

Astrophysical sources of neutrinos detected by large-scale neutrino telescopes remain
uncertain. While there exist statistically significant observational indications that a part of the …

We present multiepoch, parsec-scale core brightness temperature observations of 447
active galactic nucleus (AGN) jets from the MOJAVE and 2 cm Survey programs at 15 GHz …

Ultra-high angular resolution in astronomy has always been an important vehicle for making
fundamental discoveries. Recent results in direct imaging of the vicinity of the supermassive …

The origin of cosmic high-energy neutrinos remains largely unexplained. For high-energy
neutrino alerts from IceCube, a coincidence with time-variable emission has been seen for …

We investigate the possibility that radio-bright active galactic nuclei (AGN) are responsible
for the TeV–PeV neutrinos detected by IceCube. We use an unbinned maximum-likelihood …