English

Strong lensing systems and galaxy cluster observations as probe to the cosmic distance duality relation

Cosmology and Nongalactic Astrophysics 2022-02-23 v2

Abstract

{In this paper, we use large scale structure observations to test the redshift dependence of cosmic distance duality relation (CDDR), DL(1+z)2/DA=η(z)D_{\rm L}(1+z)^{-2}/D_{\rm A}=\eta(z)}, with DLD_{\rm L} and DAD_{\rm A}, being the luminosity and angular diameter distances, respectively. In order to perform the test, the following data set are considered: strong lensing systems and galaxy cluster measurements (gas mass fractions). No specific cosmological model is adopted, only a flat universe is assumed. { By considering two η(z)\eta(z) parametrizations, It is observed that the CDDR remain redshift independent within 1.5σ1.5\sigma which is in full agreement with other recent tests involving cosmological data}. It is worth to comment that our results are independent of the baryon budget of galaxy clusters.

Keywords

Cite

@article{arxiv.2104.01614,
  title  = {Strong lensing systems and galaxy cluster observations as probe to the cosmic distance duality relation},
  author = {R. F. L. Holanda and F. S. Lima and Akshay Rana and Deepak Jain},
  journal= {arXiv preprint arXiv:2104.01614},
  year   = {2022}
}

Comments

7 pages, two figs, one table, EPJC Accepted