The Galactic Magnetic Field and UHECR Optics
High Energy Astrophysical Phenomena
2015-08-20 v1 Astrophysics of Galaxies
Abstract
A good model of the Galactic magnetic field is crucial for estimating the Galactic contribution in dark matter and CMB-cosmology studies, determining the sources of UHECRs, and also modeling the transport of Galactic CRs since the halo field provides an important escape route for by diffusion along its field lines. We briefly review the observational foundations of the Jansson-Farrar 2012 model for the large scale structure of the GMF, underscoring the robust evidence for a N-to-S directed, spiraling halo field. New results on the lensing effect of the GMF on UHECRs are presented, displaying multiple images and dramatic magnification and demagnification that varies with source direction and CR rigidity.
Cite
@article{arxiv.1508.04530,
title = {The Galactic Magnetic Field and UHECR Optics},
author = {Glennys R. Farrar and Nafiun Awal and Deepak Khurana and Michael Sutherland},
journal= {arXiv preprint arXiv:1508.04530},
year = {2015}
}
Comments
Oral Contribution to ICRC 2015