Is the universe transparent?

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Is the universe transparent?

We present our study on cosmic opacity, which relates to changes in photon number as photons travel from the source to the observer. Cosmic opacity may be caused by absorption or scattering due to matter in the Universe, or by extragalactic magnetic fields that can turn photons into unobserved parti...

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Bibliographic Details
Main Authors:	Liao, Kai, Avgoustidis, Anastasios, Li, Zhengxiang
Format:	Article
Published:	American Physical Society 2015
Online Access:	https://eprints.nottingham.ac.uk/42174/

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