Ultra-high energy cosmic rays deflection by the Intergalactic Magnetic Field
High Energy Astrophysical Phenomena
2021-10-20 v1
Abstract
The origin and composition of ultra-high energy cosmic rays (UHECRs) remain a mystery. The common lore is that UHECRs are deflected from their primary directions by the Galactic and extragalactic magnetic fields. Here we describe an extragalactic contribution to the deflection of UHECRs that does not depend on the strength and orientation of the initial seed field. Using the IllustrisTNG simulations, we show that outflow-driven magnetic bubbles created by feedback processes during galaxy formation deflect approximately half of all eV protons by or more, and up to -. This implies that the deflection in the intergalactic medium must be taken into account in order to identify the sources of UHECRs.
Keywords
Cite
@article{arxiv.2101.07207,
title = {Ultra-high energy cosmic rays deflection by the Intergalactic Magnetic Field},
author = {Andres Aramburo Garcia and Kyrylo Bondarenko and Alexey Boyarsky and Dylan Nelson and Annalisa Pillepich and Anastasia Sokolenko},
journal= {arXiv preprint arXiv:2101.07207},
year = {2021}
}