Speaker
Description
Data of the James Webb Space Telescope (JWST) has revealed a surprisingly large number of active galactic nuclei (AGN) populating the universe at large redshifts (5 < z < 10). The nature of these objects is not tightly constrained observationally yet. We discuss the cosmogenic neutrino flux arising from these sources if they are capable of accelerating cosmic ray protons to energies up to ~1e19 eV. Interactions with the high-redshift CMB result in a pronounced bump in the neutrino flux around 50 PeV, which can saturate the current estimate of the neutrino intensity from the IceCube Neutrino Observatory within the parameter space allowed by JWST observations. The non-association of neutrino events to point sources in a future high-statistics observation of the 50 PeV bump could indicate that their origin lies in the high-redshift universe.
