Ultrahigh Energy Cosmic Rays: New Physics or Old Physics?
Astrophysics
2009-11-10 v1
Abstract
We consider the advantages of and the problems associated with hypotheses to explain the origin of ulthrahigh energy cosmic rays (UHECR: E > 10 EeV) and the "trans GZK" cosmic rays (TGZK: E > 100 EeV), both through "old physics" (acceleration in cosmic sources) and "new physics" (new particles, topological defects, fat neutrino cross sections, Lorentz invariance violation).
Cite
@article{arxiv.astro-ph/0407311,
title = {Ultrahigh Energy Cosmic Rays: New Physics or Old Physics?},
author = {F. W. Stecker},
journal= {arXiv preprint arXiv:astro-ph/0407311},
year = {2009}
}
Comments
Invited paper for CRIS 2004 Intl. Seminar on Cosmic Rays: "GZK and Surroundings", to be published in Nucl. Phys. B