Speaker
Description
In this contribution, we investigate the cosmological evolution of quasars with the KM3NeT neutrino telescope. Quasars are amongst the most luminous non-transient extragalactic sources accelerating particles to relativistic velocities. These particles will produce gamma-rays as well as neutrinos. The quasar luminosities and number densities within the universe are evolving with redshift, and feedback processes from quasars can influence the evolution of galaxies. Therefore, it is crucial to understand the quasar evolution. While gamma-rays of quasars are absorbed by the extragalactic background light as well as by potential internal radiation fields, neutrinos will propagate unimpeded until reaching Earth. This makes them unique probes to test the redshift evolution of quasars. To attain this objective, we first divide quasars into two groups: high- and low-redshift sources. For each group, a stacking analysis of neutrino data from the KM3NeT/ARCA observatory is performed and the sensitivities are investigated.
| Collaboration(s) | KM3NeT |
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