Practical Statistics for the Voids Between Galaxies

Details Practical Statistics for the Voids Between Galaxies Practical Statistics for the Voids Between Galaxies

2010-12-15

arxiv.org/abs/1012.3324v1

published on Serbian Astronomical Journal 181,19 (2010)

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

28 pages 7 figures

Scientific paper

The voids between galaxies are identified with the volumes of the Poisson Voronoi tessellation. Two new survival functions for the apparent radii of voids are derived. The sectional normalized area of the Poisson Voronoi tessellation is modelled by 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.

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