  Particles may be accelerated in magnetized coronae via magnetic reconnections
and/or plasma turbulence, leading to high-energy neutrinos and soft gamma rays.
We evaluate the detectability of neutrinos from nearby bright Seyfert galaxies
identified by X-ray measurements. In the disk-corona model, we find that NGC
1068 is the most promising Seyfert galaxy in the Northern sky, where IceCube is
the most sensitive, and show prospects for the identification of aggregated
neutrino signals from Seyfert galaxies bright in X-rays. Moreover, we
demonstrate that nearby Seyfert galaxies are promising targets for the next
generation of neutrino telescopes such as KM3NeT and IceCube-Gen2. For KM3NeT,
Cen A can be the most promising source in the Southern sky if a significant
fraction of the observed X-rays come from the corona, and it could be
identified in few years of KM3NeT operation. Our results reinforce the idea
that hidden cores of supermassive black holes are the dominant sources of the
high-energy neutrino emission and underlines the necessity of better
sensitivity to medium-energy ranges in future neutrino detectors for
identifying the origin of high-energy cosmic neutrinos.
