Isaac Scientific Publishing

Advances in Astrophysics

Voronoi Chords in Flat Cosmology

Download PDF (844.5 KB) PP. 73 - 82 Pub. Date: May 1, 2017

DOI: 10.22606/adap.2017.22002

Author(s)

  • Lorenzo Zaninetti*
    Physics Department, via P.Giuria 1, I-10125 Turin, Italy

Abstract

In this paper we present formulae for chord length distribution in the framework of Poissonian Voronoi Tessellation (PVT) and non Poissonian Voronoi Tessellation (NPVT). The introduction of the scale parameter in the obtained distributions allows us to model the chord for cosmic voids. A graphical comparison between cosmic voids visible on two catalogs of galaxies, 2dFGRS and VIPERS, and theoretical random chords is reported.

Keywords

Cosmology, observational cosmology, distances, redshifts, radial velocities, spatial dis- tribution of galaxies.

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