Non-Gaussian morphology on large scales: Minkowski functionals of the REFLEX cluster catalogue
Astrophysics
2016-08-30 v2
Abstract
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%.
Keywords
Cite
@article{arxiv.astro-ph/0105150,
title = {Non-Gaussian morphology on large scales: Minkowski functionals of the REFLEX cluster catalogue},
author = {M. Kerscher and K. Mecke and P. Schuecker and H. B"ohringer and L. Guzzo and C. A. Collins and S. Schindler and S. De Grandi and R. Cruddace},
journal= {arXiv preprint arXiv:astro-ph/0105150},
year = {2016}
}
Comments
16 pages, 9 figures, version accepted in A&A, some clarifications