# The Effects of the Galactic Magnetic Field on UHECR From Local Sources

## TL;DR

This paper investigates how the Galactic magnetic field influences the propagation of ultra-high-energy cosmic rays from local extragalactic sources, focusing on magnetic structures and their effects on cosmic ray trajectories.

## Contribution

It provides a detailed analysis of the effects of specific Galactic magnetic field components on cosmic ray propagation, highlighting phenomena like shadowing and deflection.

## Key findings

- Identification of magnetic field components responsible for different effects
- Analysis of cosmic ray deflection patterns at high energies
- Insights into cosmic ray source visibility through magnetic field structures

## Abstract

We summarise the results found following a study of the effects that Galactic magnetic fields can have on the propagation of cosmic rays from local extragalactic sources. This study focuses on the coherent structures in the Jansson-Farrar Galactic magnetic field model, namely the: disk field, a toroidal field, and an x-field components. The phenomena of Galactic magnetic field shadowing, source deflection, and Galactic magnetic field tunnel vision are all noted. Attention throughout this study is placed on particles with rigidity around $10^{18.5}$ EV, believed to dominate the cosmic ray spectrum above the ankle. The Galactic magnetic field component predominantly responsible for giving rise to each of these different effects was determined.