Cosmic ray drift, the second knee and galactic anisotropies

Details Cosmic ray drift, the second knee and galactic anisotropies Cosmic ray drift, the second knee and galactic anisotropies

2002-07-05

arxiv.org/abs/astro-ph/0207143v1

JHEP 0212 (2002) 032

Astronomy and Astrophysics

Astrophysics

10 pages, 4 figures

Scientific paper

10.1088/1126-6708/2002/12/032

We show that the second knee in the cosmic ray spectrum (i.e. the steepening occurring at $E\simeq 4\times 10^{17}$ eV) could be related to drift effects affecting the heaviest nuclear component, the iron group nuclei, in a scenario in which the knee at $3\times 10^{15}$ 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 $E\sim 10^{18}$ eV, before the extragalactic component becomes dominant.

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