The Homogeneity Scale of the universe

Pierros Ntelis

The Homogeneity Scale of the universe

Cosmology and Nongalactic Astrophysics 2016-07-13 v1

Authors: Pierros Ntelis

Abstract

In this study, we probe the cosmic homogeneity with the BOSS CMASS galaxy sample in the redshift region of $0.43 < z < 0.7$ . We use the normalised counts-in-spheres estimator $\mathcal{N}(<r)$ and the fractal correlation dimension $\mathcal{D}_{2}(r)$ to assess the homogeneity scale of the universe. We verify that the universe becomes homogenous on scales greater than $\mathcal{R}_{H} \simeq 64.3\pm1.6\ h^{-1}Mpc$ , consolidating the Cosmological Principle with a consistency test of $\Lambda$ CDM model at the percentage level. Finally, we explore the evolution of the homogeneity scale in redshift.

Keywords

cosmic homogeneity BOSS CMASS galaxy sample fractal correlation dimension homogeneity scale LambdaCDM model cosmological principle

Cite

@article{arxiv.1607.03418,
  title  = {The Homogeneity Scale of the universe},
  author = {Pierros Ntelis},
  journal= {arXiv preprint arXiv:1607.03418},
  year   = {2016}
}

Comments

5 pages, 2 figures, Talk presented at The 51th Rencontres de Moriond, March 19-26, 2016, La Thuile, Italy; to appear in the Moriond Conference Proceedings

The Homogeneity Scale of the universe

Abstract

Keywords

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