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arXiv · 1305.2114

Comment on "Irregularity in gamma ray source spectra as a signature of axion-like particles"

Giorgio Galanti·Marco Roncadelli
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Abstract

D. Wouters and P. Brun in Phys. Rev. D 86, 043005 (2012) claim that an observable effect in the spectra of distant very-high-energy blazars arises as a consequence of oscillations of photons into axion-like particles (ALPs) in the presence of turbulent extra-galactic magnetic fields. The main objective of this comment is to demonstrate that such a result is physically incorrect. We also show that a physically correct treatment of the same issue leads to a much less relevant conclusion, which makes the effect pointed out by WB likely unobservable with the present capabilities.

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Giorgio Galanti, Marco Roncadelli. 2013-05-09. Comment on "Irregularity in gamma ray source spectra as a signature of axion-like particles". https://arxiv.org/abs/1305.2114

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