Ultrahigh energy cosmic rays as heavy nuclei from cluster accretion shocks

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dc.creatorInoue, Susumu
dc.creatorSigl, Guenter
dc.creatorMiniati, Francesco
dc.creatorArmengaud, Eric
dc.date2007-11-07
dc.date.accessioned2026-07-07T08:41:19Z
dc.date.available2026-07-07T08:41:19Z
dc.descriptionLarge-scale accretion shocks around massive clusters of galaxies, generically expected in hierarchical scenarios of cosmological structure formation, are shown to be potential sources of the observed ultrahigh energy cosmic rays (UHECRs) by accelerating a mixture of heavy nuclei including the iron group elements. Current observations can be explained if the source composition at injection for the heavier nuclei is somewhat enhanced from simple expectations for the accreting gas. The proposed picture should be testable by current and upcoming facilities in the near future through characteristic features in the UHECR spectrum, composition and anisotropy. The associated X-ray and gamma-ray signatures are also briefly discussed.
dc.description4 pages, 4 figures, Proceedings of the 30th ICRC, Merida, Mexico, 2007
dc.identifierhttps://arxiv.org/abs/0711.1027
dc.identifierhttp://arxiv.org/abs/0711.1027
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/141641
dc.subjectAstrophysics
dc.titleUltrahigh energy cosmic rays as heavy nuclei from cluster accretion shocks
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