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IOP Publishing, Journal of Cosmology and Astroparticle Physics, 10(2010), p. 024-024, 2010

DOI: 10.1088/1475-7516/2010/10/024

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Constraints on cosmic opacity and beyond the standard model physics from cosmological distance measurements

Journal article published in 2010 by Anastasios Avgoustidis, Clare Burrage, Javier Redondo, Licia Verde, Raul Jimenez ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

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 $ε$ parametrising deviations from the luminosity-angular diameter distance relation ($d_L=d_A(1+z)^{2+ε}$), is $ε=-0.04_{-0.07}^{+0.08}$ (2-$σ$). For the redshift range between 0.2 and 0.35 this corresponds to an opacity $Δτ