Axion-Like Particles, Cosmic Magnetic Fields and Gamma-Ray Astrophysics

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dc.creatorDe Angelis, Alessandro
dc.creatorMansutti, Oriana
dc.creatorRoncadelli, Marco
dc.date2007-07-18
dc.date2007-12-14
dc.date.accessioned2026-07-07T11:17:52Z
dc.date.available2026-07-07T11:17:52Z
dc.descriptionAxion-Like Particles (ALPs) are predicted by many extensions of the Standard Model and give rise to characteristic dimming and polarization effects in a light beam travelling in a magnetic field. In this Letter, we demonstrate that photon-ALP mixing in cosmic magnetic fields produces an observable distortion in the energy spectra of distant gamma-ray sources (like AGN) for ranges of the ALP parameters allowed by all available constraints. The resulting effect is expected to show up in the energy band 100 MeV - 100 GeV, and so it can be serched with the upcoming GLAST mission.
dc.description17 pages, 6 figures; accepted for publication in Physics Letters B. Revised version
dc.identifierhttps://arxiv.org/abs/0707.2695
dc.identifierhttp://arxiv.org/abs/0707.2695
dc.identifierPhys.Lett.B659:847-855,2008
dc.identifierdoi:10.1016/j.physletb.2007.12.012
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/193156
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleAxion-Like Particles, Cosmic Magnetic Fields and Gamma-Ray Astrophysics
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