Cosmological birefringence constraints from CMB and astrophysical polarization data

Journal
Date Issued
2015
Author(s)
Galaverni, M.
•
Gubitosi, G.
•
Paci, F.
•
DOI
Abstract
Cosmological birefringence is a rotation of the polarization plane of photons coming from sources of astrophysical and cosmological origin. The rotation can also depend on the energy of the photons and not only on the distance of the source and on the cosmological evolution of the underlying theoretical model. In this work, we constrain few selected models for cosmological birefringence, combining CMB and astrophysical data at radio, optical, X and γ wavelengths, taking into account the specific energy and distance dependences.
Volume
2015
Issue
8
Start page
031
Uri
Url
Issn Identifier
1475-7516
Ads BibCode
2015JCAP...08..031G
Rights
open.access
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