Voids and velocities in initially Gaussian models for large-scale structure

Details Voids and velocities in initially Gaussian models for large-scale structure Voids and velocities in initially Gaussian models for large-scale structure

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.228.1001m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 228, Oct. 15, 1987, p. 1001-1023.

Astronomy and Astrophysics

Astronomy

38

Astronomical Models, Dark Matter, Galactic Structure, Gauss Equation, Random Processes, Universe, Hubble Constant, Voids, White Noise

Scientific paper

Recent data on large-scale voids and bulk motions in the universe are used to examine various theoretical models with Gaussian random phase perturbations. Biased cold dark matter models account for voids which are large enough for existing three-dimensional data sets, but produce bulk velocities which are much too low. Larger velocites are produced by hot dark matter models and initially Poissonian models, although these models have small velocities if galaxies are clustered at least as tightly as dark matter. The size of voids vary with galaxy mass and luminosity in cold biased models but not in hot dark matter models.

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