Cosmic rays above the 2nd knee from clusters of galaxies

Kohta Murase; Susumu Inoue; Katsuaki Asano

doi:10.1142/S0218271809015564

Cosmic rays above the 2nd knee from clusters of galaxies

Kohta Murase, Susumu Inoue, Katsuaki Asano

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

In clusters of galaxies, accretion and merger shocks are potential accelerators of high energy protons, as well as intracluster active galactic nuclei. We discuss the possibility that protons from cluster shocks make a significant contribution to the observed cosmic rays in the energy range between the second knee at ∼10^17.5 eV and the ankle at ∼10 ^18.5 eV. The accompanying neutrino and gamma-ray signals could be detectable by upcoming telescopes such as IceCube/KM3Net and CTA, providing a test of this scenario as well as a probe of cosmic-ray confinement properties in clusters.

Original language	English (US)
Pages (from-to)	1609-1614
Number of pages	6
Journal	International Journal of Modern Physics D
Volume	18
Issue number	10
DOIs	https://doi.org/10.1142/S0218271809015564
State	Published - Oct 2009

All Science Journal Classification (ASJC) codes

Mathematical Physics
Astronomy and Astrophysics
Space and Planetary Science

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abstract = "In clusters of galaxies, accretion and merger shocks are potential accelerators of high energy protons, as well as intracluster active galactic nuclei. We discuss the possibility that protons from cluster shocks make a significant contribution to the observed cosmic rays in the energy range between the second knee at ∼1017.5 eV and the ankle at ∼10 18.5 eV. The accompanying neutrino and gamma-ray signals could be detectable by upcoming telescopes such as IceCube/KM3Net and CTA, providing a test of this scenario as well as a probe of cosmic-ray confinement properties in clusters.",

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AB - In clusters of galaxies, accretion and merger shocks are potential accelerators of high energy protons, as well as intracluster active galactic nuclei. We discuss the possibility that protons from cluster shocks make a significant contribution to the observed cosmic rays in the energy range between the second knee at ∼1017.5 eV and the ankle at ∼10 18.5 eV. The accompanying neutrino and gamma-ray signals could be detectable by upcoming telescopes such as IceCube/KM3Net and CTA, providing a test of this scenario as well as a probe of cosmic-ray confinement properties in clusters.

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Cosmic rays above the 2nd knee from clusters of galaxies

Abstract

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