Publication Date:
2011-08-19
Description:
Distributions of galaxies and of clusters of galaxies have been investigated using the correlation function, the excess probability over random that there are two objects separated by a distance r. It is shown here that if the amplitudes of the cluster-cluster correlation function are made dimensionless, systematic changes with cluster richness vanish, implying scale invariance in the cluster process. The dimensionless galaxy-galaxy correlation seems stronger, implying gravitational enhancement on smaller scales.
Keywords:
ASTROPHYSICS
Type:
Nature (ISSN 0028-0836); 314; 718
Format:
text