Observational cosmology and the cosmic distance-duality relation

Abstract

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 four different ways and we find that the mock data set, which assumes a spherical isothermal $\beta$ model for the galaxy clusters does not accommodate the distance duality relation while the real data set which assumes elliptical $\beta$ model does.

arXiv comment4 pages, Proceedings of the 7th International Conference on Gravitation and Cosmology, 14-19 December (2011), Goa, INDIA

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Cited by in corpus (7)

• Probing the cosmic distance duality with strong gravitational lensing and supernovae Ia data
• Galaxy cluster Sunyaev-Zel'dovich effect scaling-relation and type Ia supernova observations as a test for the cosmic distance duality relation
• Bayesian Comparison of the Cosmic Duality Scenarios
• On the cosmic distance duality relation and the strong gravitational lens power law density profile
• Strong lensing systems and galaxy cluster observations as probe to the cosmic distance duality relation
• Constraints on the cosmic distance duality relation with simulated data of gravitational waves from the Einstein Telescope
• Investigating the cosmic distance duality relation with gamma-ray bursts