| Issue |
A&A
Volume 393, Number 1, October I 2002
|
|
|---|---|---|
| Page(s) | 1 - 23 | |
| Section | Astrophysical processes | |
| DOI | https://doi.org/10.1051/0004-6361:20020811 | |
| Published online | 18 September 2002 | |
The supercluster-void network V.
The regularity periodogram
1
Tartu Observatory, 61602 Tõravere, Estonia
2
Research Center for the Early Universe, University of Tokyo, Tokyo 113-0033, Japan
3
Landau Institute for Theoretical Physics, Moscow 117 334, Russia
4
Depto. de Astronomía, Univ. Guanajuato, Apdo. Postal 144, C.P. 36000, Guanajuato, Mexico
Corresponding author: J. Einasto, einasto@aai.ee
Received:
27
July
1999
Accepted:
28
May
2002
We analyze the distribution of Abell clusters of galaxies to study the
regularity of the supercluster-void 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
supercluster-void 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 
.
This large-scale inhomogeneity
does not contradict recent CMB data,
but its theoretical explanation remains a challenge.
Key words: cosmology: observations / cosmology: large-scale structure of the Universe
© ESO, 2002
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