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          Institute: MPI für Physik     Collection: MPI für Physik     Display Documents



ID: 543690.0, MPI für Physik / MPI für Physik
Constraints on cosmic opacity and beyond the standard model physics from cosmological distance measurements
Authors:Avgoustidis, Anastasios; Burrage, Clare; Redondo, Javier; Verde, Licia; Jimenez, Raul
Date of Publication (YYYY-MM-DD):2010
Title of Journal:Journal of Cosmology and Astroparticle Physics
Journal Abbrev.:JCAP
Issue / Number:10
Start Page:024
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:We update constraints on cosmic opacity by combining recent SN Type Ia data compilation with the latest measurements of the Hubble expansion at redshifts between 0 and 2. The new constraint on the parameter $\epsilon$ parametrising deviations from the luminosity-angular diameter distance relation ($d_L=d_A(1+z)^{2+\epsilon}$), is $\epsilon=-0.04_{-0.07}^{+0.08}$ (2-$\sigma$). For the redshift range between 0.2 and 0.35 this corresponds to an opacity $\Delta\tau<0.012$ (95% C.L.), a factor of 2 stronger than the previous constraint. Various models of beyond the standard model physics that predict violation of photon number conservation contribute to the opacity and can be equally constrained. In this paper we put new limits on axion-like particles, including chameleons, and mini-charged particles.
Classification / Thesaurus:Astroparticle Physics
Comment of the Author/Creator:29 pages, 13 figures
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2010-43
URL:http://inspirebeta.net/record/851749
URL:http://dx.doi.org/10.1088/1475-7516/2010/10/024
URL:http://arXiv.org/abs/arxiv:1004.2053
URL:http://publications.mppmu.mpg.de/?action=search&mp...
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