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Observational cosmology and the cosmic distance-duality relation

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arxiv 1403.2070 v1 pith:KHWSIYOV submitted 2014-03-09 gr-qc

S Jhingan , D Jain , R Nair This is my paper · ORCID
classification gr-qc
keywords distancerelationdualitydataangularassumesbetaclusters
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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.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Investigating the cosmic distance duality relation with gamma-ray bursts

    astro-ph.CO 2025-09 reject novelty 5.0 of 10

    Combined gamma-ray burst and multi-probe data show no significant violation of the cosmic distance duality relation and prefer a Planck-like Hubble constant.

  2. Cosmic distance duality after DESI 2024 data release and dark energy evolution

    astro-ph.CO 2025-01 conditional novelty 4.0 of 10

    Using DESI BAO, galaxy clusters, supernovae and Hubble data, the authors find no evidence for violation of the cosmic distance duality and favor flat ΛCDM.

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