Trajectories of ultra-high-energy cosmic rays in the magnetized cosmic web

Abstract

An excess of ultra-high-energy cosmic ray (UHECR) events, so-called a hotspot, was observed by the Telescope Array experiment, but the origin has not yet been explained. We proposed that the magnetized cosmic web of the local universe could be responsible for it, suggesting a model that UHECRs, produced inside the Virgo cluster, are confined by the cluster magnetic fields for some time and then escape to and propagate along the filaments of galaxies attached to the cluster. We further explored the model by calculating the trajectories of UHECRs in the simulated cosmic web of clusters and filaments of galaxies. In this presentation, we describe the first results and discuss the implications.