Quantitative Analysis of the Void Size Distribution in the LCRS and in CDM Models

Details Quantitative Analysis of the Void Size Distribution in the LCRS and in CDM Models Quantitative Analysis of the Void Size Distribution in the LCRS and in CDM Models

2001-03-07

arxiv.org/abs/astro-ph/0103110v1

Astronomy and Astrophysics

Astrophysics

4 pages, to appear in the Proccedings of the `4th China-Germany Workshop on Cosmology', Shanghai, October 2000

Scientific paper

We have analyzed the size distribution of voids in 2D slices of the Las Campanas Redshift Survey (LCRS). The characteristic sizes show a scaling $D = D_0 + \nu\lambda$ with the mean galaxy separation $\lambda$. Comparison with mock samples of the LCRS in 2D and 3D, using various simulations, cosmologies and galaxy identification schemes, gives a similar scaling, but with steeper slope and a lack of large voids. Best results are obtained for dark matter halos in a $\Lambda$CDM model.

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