Neutrino Emission Analysis
This research is about whether X-ray bright Seyfert galaxies are hidden sources of high-energy neutrinos. In the disk-corona picture, protons accelerate in the hot magnetized corona above the accretion disk, produce pions through hadronic interactions, and then generate neutrinos. Because gamma rays can be strongly absorbed in the same environment, X-ray luminosity is often a better tracer.
Why Seyferts are compelling
Seyfert cores can be bright in X-rays while still hiding part of their high-energy electromagnetic emission, making them promising “hidden-core” neutrino factories.
Key observational progress
IceCube reported evidence from NGC 1068 at 4.2σ, and recent Southern Hemisphere stacking analyses now show a 3.0σ population-level signal from Seyferts.
Overall, Seyfert galaxies are emerging as one of the most promising classes in neutrino astronomy.