期刊
ASTRONOMY & ASTROPHYSICS
卷 377, 期 1, 页码 1-16出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20011063
关键词
large-scale structure of Universe; galaxies : clusters : general; cosmology : observation; cosmology : theory
In order to quantify higher-order correlations of the galaxy cluster distribution we use a complete family of additive measures which give scale-dependent morphological information. Minkowski functionals can be expressed analytically in terms of integrals of n-point correlation functions. They can be compared with measured Minkowski functionals of volume limited samples extracted from the Reflex survey. We find significant non-Gaussian features in the large-scale spatial distribution of galaxy clusters. A Gauss-Poisson process can be excluded as a viable model for the distribution of galaxy clusters at the significance level of 95%.
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