Axion-like particles and the propagation of gamma rays over astronomical distances
Dec 5, 20166 pages
Published in:
- JETP Lett. 105 (2017) 1, 55-59
- Published: Apr 21, 2017
e-Print:
- 1612.01864 [astro-ph.HE]
DOI:
- 10.1134/S0021364017010052 (publication)
Report number:
- INR-TH-2016-046
View in:
Citations per year
Abstract: (Springer)
In this brief review, possible manifestations of mixing between axion-like particles (ALPs) and energetic photons propagating over astronomical distances are considered. We discuss the evidence for the anomalous transparency of the Universe from observations of ensembles of distant gamma-ray sources, present the general formalism for the ALP-photon mixing and explain how this mechanism may remove the anomaly. We present relevant values of ALP parameters and discuss future ways to verify the scenario and to discover the particle in question.Note:
- 6 pages, 1 figure. Invited mini-review to be published in JETP Letters. V2: misprints and sqrt(4*pi) factors in Gauss to eV conversion corrected; conclusions unchanged
- gamma ray: propagation
- axion-like particles
- mixing
- transparency
- anomaly
- photon
References(50)
Figures(1)
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