The superclustervoid network V.. The regularity periodogram
Abstract
We analyze the distribution of Abell clusters of galaxies to study the regularity of the superclustervoid network. We apply a new method, the regularity periodogram, that is sensitive to the geometry of the location of clusters, and measure the regularity of the network. We find that the superclustervoid network resembles a cubic lattice over the entire volume considered (out to the distance of 350 h^{1} Mpc). The distribution of clusters in rich superclusters is not isotropic: it is periodic along a cubic lattice approximately aligned with the supergalactic coordinates SGX,SGY,SGZ. This largescale inhomogeneity does not contradict recent CMB data, but its theoretical explanation remains a challenge.
 Publication:

Astronomy and Astrophysics
 Pub Date:
 October 2002
 DOI:
 10.1051/00046361:20020811
 arXiv:
 arXiv:astroph/9907238
 Bibcode:
 2002A&A...393....1S
 Keywords:

 cosmology: observations;
 cosmology: largescale structure of the Universe;
 Astrophysics
 EPrint:
 7 pages LaTeX text (sty files added), 4 PostScript Figures, submitted to Astronomy and Astrophysics