Ultra-High Energy Cosmic Rays and fundamental physics - Arjen van Vliet
Talk 3 of Day 3 of the SYNERGIES@PRAGUE 2021 Workshop on multi-messenger cosmology that took place 8-11 December 2021 at CEICO (Central European Institute for Cosmology and Fundamental Physics) FZU (Institute of Physics of the Czech Academy of Sciences) in Prague.
Chair: Constantinos Skordis
Title: Ultra-High Energy Cosmic Rays and fundamental physics
Speaker: Arjen van Vliet
Affiliation: DESY
Abstract:
Recent advances in measurements of the energy spectrum, composition and arrival directions of ultra-high-energy cosmic rays (UHECRs) provide ways to probe the properties of the sources of UHECRs and of the environment the UHECRs travel through. The secondary neutrinos and ultra-high-energy photons that are produced in photohadronic interactions of UHECRs give additional insight about the sources. This multimessenger approach can especially be used to explore the composition of UHECRs and the source evolution with redshift. In addition, recent UHECR anisotropy measurements suggest correlations between UHECR arrival directions and local starforming galaxies or Active Galactic Nuclei (AGN). These results provide information about the magnetic fields in between these sources and Earth, both on Galactic and extragalactic scales.
Slides: https://synergies-prague.fzu.cz/talks...
Workshop website: https://synergies-prague.fzu.cz/
CEICO website: https://ceico.cz/
FZU website: https://www.fzu.cz/en/home