Practical Statistics for the Voids Between Galaxies

Practical Statistics for the Voids Between Galaxies

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The voids between galaxies are identified withthe volumes of the Poisson Voronoi tessellation.Two new survival functions for the apparent radii of voids are derived. The sectional normalized area ofthe Poisson Voronoi tessellation is modelledby the Kiang function and by the exponential function. Two...

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Bibliographic Details
Main Author: Zaninetti, L.
Format: Article
Language:English
Published: Astronomical Observatory, Department of Astronomy, Belgrade 2010-12-01
Series:Serbian Astronomical Journal
Subjects:
Methods: statistical
Cosmology: observations
large-scale structure of Universe
Online Access:http://saj.matf.bg.ac.rs/181/pdf/019-029.pdf
Description
Summary:The voids between galaxies are identified withthe volumes of the Poisson Voronoi tessellation.Two new survival functions for the apparent radii of voids are derived. The sectional normalized area ofthe Poisson Voronoi tessellation is modelledby the Kiang function and by the exponential function. Two new survival functions with equivalent sectional radius are therefore derived; they represent an alternative to the survival function of voids between galaxies as given by the self-similar distribution. The spatial appearance of slices of the 2dF Galaxy Redshift Survey is simulated.
ISSN:1450-698X

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