Title of article
Cosmic rays from the ankle to the cutoff
Author/Authors
Kampert، نويسنده , , Karl-Heinz and Tinyakov، نويسنده , , Peter، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2014
Pages
11
From page
318
To page
328
Abstract
Recent advances in measuring and interpreting cosmic rays from the spectral ankle to the highest energies are briefly reviewed. The prime question at the highest energies is about the origin of the flux suppression observed at E ≃ 4 ⋅ 10 19 eV . Is this the long-awaited GZK-effect or the exhaustion of sources? The key to answering this question will be provided by the largely unknown mass composition at the highest energies. The high level of isotropy observed even at the highest energies challenges models of a proton-dominated composition if extragalactic magnetic fields are on the order of a few nG or less. We shall discuss the experimental and theoretical progress in the field and the prospects for the next decade.
Keywords
Anisotropy , Energy spectrum , UHECR , Mass composition , Anisotropie , Rayons cosmiques , Composition masse
Journal title
Comptes Rendus Physique
Serial Year
2014
Journal title
Comptes Rendus Physique
Record number
2284601
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