Speaker
Description
The IceCube Neutrino Observatory is a cubic kilometer neutrino telescope located at the South Pole instrumenting deep Antarctic ice. Uncovering the origin of high-energy astrophysical neutrinos is one of IceCube's major goals. We analyze a data sample of through-going track events produced by charged-current muon-neutrino interactions recorded between 2010 and 2023, focusing on the search for individual neutrino point-sources in the Northern sky. Given the 4.2 $\sigma$ evidence for neutrino emission from NGC 1068, which is classified as a Seyfert galaxy and is especially bright in the X-ray emission band, and other IceCube results suggesting correlations between keV X-rays and TeV neutrinos predicted by theoretical models, we additionally search for neutrino emission from X-ray bright, non-blazar active galactic nuclei (AGNs). The catalog selection criteria were updated compared to previous studies, resulting in 47 candidate sources (excluding NGC 1068). In this contribution, we present an updated measurement of neutrino emission from NGC 1068 at a global significance of 4.0 $\sigma$ and evidence of neutrino excess from a population of newly selected X-ray bright, non-blazar AGNs at the 3.3 $\sigma$ level of significance.
