Acceleration of ultra-high energy cosmic rays by galaxy cluster accretion shocks |
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Authors: | V. S. Ptuskin S. I. Rogovaya V. N. Zirakashvili |
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Affiliation: | (1) Pushkov Institute of Terrestrial Magnetism, Ionosphere, and Radio Wave Propagation, Russian Academy of Sciences, Troitsk, Moscow oblast, 142190, Russia |
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Abstract: | Acceleration of protons and nuclei by shock waves arising during accretion on galaxy clusters is considered. The generation of magnetohydrodynamic turbulence by streaming instability of accelerated particles in a shock precursor, cluster mass distribution, and particle energy loss upon interaction with cosmic microwave background and IR background radiation are taken into account. The contribution of these sources to the cosmic ray intensity observed at energies of 1017–1020 eV is calculated. |
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