Astronomy and Astrophysics – Astrophysics
Scientific paper
1993-02-24
Mon.Not.Roy.Astron.Soc. 266 (1994) 524-544
Astronomy and Astrophysics
Astrophysics
To be compiled with LaTeX, with the A4.STY macro, included at the bottom of the text file
Scientific paper
We perform a detailed investigation of the statistical properties of the projected distribution of galaxy clusters obtained in Cold Dark Matter (CDM) models with both Gaussian and skewed primordial density fluctuations. We use N-body simulations to construct a set artificial Lick maps. An objective cluster--finding algorithm is used to identify clusters of different richness. For Gaussian models, the overall number of clusters is too small in the standard CDM case, but a model with higher normalisation fares much better; non--Gaussian models with negative skewness also fit faily well. We apply several statistical tests to compare real and simulated cluster samples, such as the 2-point correlation function, the minimal spanning tree construction, the multifractal analysis and the skewness of cell counts. The emerging picture is that Gaussian models, even with a higher normalization, are in trouble. Skew-positive models are also ruled out, while skew-negative models can reproduce the observed clustering of galaxy clusters in the CDM framework.
Borgani Stefano
Coles Peter
Moscardini Lauro
Plionis Manolis
No associations
LandOfFree
Angular Distribution of Clustersin Skewed CDM Models does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Angular Distribution of Clustersin Skewed CDM Models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Angular Distribution of Clustersin Skewed CDM Models will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-121904