EPJ Web of Conferences
Volume 53, 2013UHECR 2012 - International Symposium on Future Directions in UHECR Physics
|Number of page(s)||15|
|Section||Invited Papers and Working Group Reports|
|Published online||25 June 2013|
Interpretation of ultra-high energy multi-messenger data
II. Institut für theoretische Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
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Charged ultra-high energy cosmic rays above ∼1017 eV are most likely accelerated in powerful astrophysical objects that have to meet a number of requirements to reach energies beyond the highest energies observed, a few 1020 eV, among them sufficient electromagnetic power and further constraints on geometry and magnetic fields to avoid excessive energy losses during acceleration. Since charged particles are deflected in cosmic magnetic fields and do not always point back to their sources, it is challenging to identify them and to reconstruct a detailed understanding of the acceleration mechanism. Neutral secondaries such as γ−rays and neutrinos that are produced by interactions of primary cosmic rays within the source and during propagation can provide important complementary information. We provide a brief overview over how multi-messenger data can be exploited to learn more about source and propagation physics.
© Owned by the authors, published by EDP Sciences, 2013
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