English

Cosmic ray drift, the second knee and galactic anisotropies

Astrophysics 2009-11-07 v1 High Energy Physics - Phenomenology

Abstract

We show that the second knee in the cosmic ray spectrum (i.e. the steepening occurring at E4×1017E\simeq 4\times 10^{17} eV) could be related to drift effects affecting the heaviest nuclear component, the iron group nuclei, in a scenario in which the knee at 3×10153\times 10^{15} eV indicates the onset of drift effects in the lighter proton component. We also study the anisotropies resulting from diffusion and drift currents in the Galaxy, showing their potential relevance to account for the AGASA observations at E1018E\sim 10^{18} eV, before the extragalactic component becomes dominant.

Keywords

Cite

@article{arxiv.astro-ph/0207143,
  title  = {Cosmic ray drift, the second knee and galactic anisotropies},
  author = {Julian Candia and Silvia Mollerach and Esteban Roulet},
  journal= {arXiv preprint arXiv:astro-ph/0207143},
  year   = {2009}
}

Comments

10 pages, 4 figures

R2 v1 2026-07-22T08:12:30.214Z