Observational Cosmology And The Cosmic Distance Duality Relation

Details Observational Cosmology And The Cosmic Distance Duality Relation Observational Cosmology And The Cosmic Distance Duality Relation

2011-02-05

arxiv.org/abs/1102.1065v2

JCAP 05 (2011) 023

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

14 Latex pages, 9 figures, Accepted for publication in JCAP

Scientific paper

We study the validity of cosmic distance duality relation between angular diameter and luminosity distances. To test this duality relation we use the latest Union2 Supernovae Type Ia (SNe Ia) data for estimating the luminosity distance. The estimation of angular diameter distance comes from the samples of galaxy clusters (real and mock) and FRIIb radio galaxies. We parameterize the distance duality relation as a function of redshift in six different ways. Our results rule out some of the parameterizations significantly.

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