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Photon-axion mixing and ultra-high-energy cosmic rays from BL Lac type objects -- Shining light through the Universe

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arxiv 0901.4085 v3 pith:5IU3NJWA submitted 2009-01-26 astro-ph.HE hep-ph

Malcolm Fairbairn , Timur Rashba , Sergey Troitsky This is my paper · ORCID
classification astro-ph.HEhep-ph
keywords objectsdistantgalaxiesparticlesphotonstypeultra-high-energyactive
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Photons may convert into axion like particles and back in the magnetic field of various astrophysical objects, including active galaxies, clusters of galaxies, intergalactic space and the Milky Way. This is a potential explanation for the candidate neutral ultra-high-energy (E>10^18 eV) particles from distant BL Lac type objects which have been observed by the High Resolution Fly's Eye experiment. Axions of the same mass and coupling may explain also TeV photons detected from distant blazars.

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  1. On the impact of magnetic-field models in galaxy clusters on constraints on axion-like particles from the lack of irregularities in high-energy spectra of astrophysical sources

    astro-ph.HE 2019-08 conditional novelty 5.0 of 10

    For a purely regular magnetic field in the X-ray cavity of NGC 1275, the ALP-photon coupling constraints from Fermi-LAT spectral smoothness are much weaker than for the purely turbulent field assumed in previous work,...

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