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Non-Gaussian morphology on large scales: Minkowski functionals of the REFLEX cluster catalogue | | M.Kerscher
; K.Mecke
; P. Schuecker
; H. B"ohringer
; L. Guzzo
; C.A. Collins
; S. Schindler
; S. De Grandi
; R. Cruddace
; | | Date: |
9 May 2001 | | Journal: | A&A, 377 (2001) 1 | | Subject: | astro-ph | | Affiliation: | University of Munich, JHU), K.Mecke (MPI, University of Stuttgart), P. Schuecker, H. B"ohringer (MPE), L. Guzzo (Osservatorio Astronomico di Brera), C.A. Collins, S. Schindler (Liverpool John Moores University), S. De Grandi (Osservatorio Astronom | | 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%. | | Source: | arXiv, astro-ph/0105150 | | Services: | Forum | Review | PDF | Favorites | |
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