Cosmic Ray Acceleration by Relativistic Shocks: Limits and Estimates

Cosmic Ray Acceleration by Relativistic Shocks: Limits and Estimates

We examine limits to the energy to which cosmic rays can be accelerated by relativistic shocks, showing that acceleration of light ions as high as 100 EeV is unlikely. The implication of our estimates is that if ultra-high energy cosmic rays are accelerated by shocks, then those shocks are probably...

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Veröffentlicht in:arXiv.org 2017-09
Hauptverfasser: Bell, A R, Araudo, A T, Matthews, J H, Blundell, K M
Format: Artikel
Sprache:eng
Schlagworte:
Acceleration
Cosmic rays
High energy astronomy
Light ions
Physics - High Energy Astrophysical Phenomena
Relativism
Relativistic effects
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Zusammenfassung:We examine limits to the energy to which cosmic rays can be accelerated by relativistic shocks, showing that acceleration of light ions as high as 100 EeV is unlikely. The implication of our estimates is that if ultra-high energy cosmic rays are accelerated by shocks, then those shocks are probably not relativistic.
ISSN:2331-8422
DOI:10.48550/arxiv.1709.07793