2 code implementations • 22 Oct 2018 • Pierros Ntelis, Anne Ealet, Stephanie Escoffier, Jean-Christophe Hamilton, Adam James Hawken, Jean-Marc Le Goff, James Rich, Andre Tilquin
In this paper, we study the characteristic scale of transition to cosmic homogeneity of the universe, $\mathcal{R}_H$, as a standard ruler, to constrain cosmological parameters on mock galaxy catalogues.
Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology
2 code implementations • 7 Feb 2017 • Pierros Ntelis, Jean-Christophe Hamilton, Jean-Marc Le Goff, Nicolas Guillermo Busca, Eric Aubourg, Pierre Laurent, James Rich, Etienne Burtin, Hélion du Mas des Bourboux, Nathalie Palanque Delabrouille, Christophe Yeche, David W. Hogg, Adam Myers, Jeremy Tinker, Julian Bautista, Timothée Delubac, Graziano Rossi, Donald P. Schneider Rita Toheiro, Mariana Vargas-Magaña
Defining the scale of transition to homogeneity as the scale at which $\mathcal{D}_2(r)$ reaches 3 within $1\%$, i. e. $\mathcal{D}_2(r)>2. 97$ for $r>\mathcal{R}_H$, we find $\mathcal{R}_H = (63. 3\pm0. 7) \ h^{-1}\ \mathrm{Mpc}$, in agreement at the percentage level with the predictions of the $\Lambda$CDM model $\mathcal{R}_H=62. 0\ h^{-1}\ \mathrm{Mpc}$.
Cosmology and Nongalactic Astrophysics
2 code implementations • 29 Feb 2016 • Pierre Laurent, Jean-Marc Le Goff, Etienne Burtin, Jean-Christophe Hamilton, David W. Hogg, Adam Myers, Pierros Ntelis, Isabelle Pâris, James Rich, Eric Aubourg, Julian Bautista, Timothée Delubac, Hélion du Mas des Bourboux, Sarah Eftekharzadeh, Nathalie Palanque Delabrouille, Patrick Petitjean, Graziano Rossi, Donald P. Schneider, Christophe Yeche
For the matter distribution we obtain $3-\langle D_2 \rangle < 5 \times 10^{-5}$ (2 $\sigma$) over the range $250<r<1200 \, h^{-1}$Mpc, consistent with homogeneity on large scales.
Cosmology and Nongalactic Astrophysics
