Abstract：
Some supermassive black holes at the center of galaxies may accelerate cosmic rays to very high energies, producing high-energy neutrinos and gamma-rays observable on Earth. The dark matter in the vicinity of supermassive black holes may scatter off protons, electrons, neutrinos and photons, perhaps cooling them too fast. Furthermore, a fraction of the dark matter and the cosmic neutrino background in these environments may be boosted to larger energies via scatterings with cosmic rays, yielding a flux directly detectable at Earth-based experiments. I will discuss all these phenomenological signatures in some detail, showing that they allow to probe new regions of the parameter space of particle dark matter and relic neutrino overdensity.
Biography:
Gonzalo performed his doctoral studies at the Technical University of Munich and Max-Planck Institute for Physics in between 2021 and 2023. In October 2023, he began working as a Postdoc at Virginia Tech. He works on different aspects of dark matter and neutrino phenomenology (https://inspirehep.net/authors/1859892).