Morphological fluctuations of large-scale structure: the PSCz survey
Abstract
In a follow-up study to a previous analysis of the IRAS 1.2Jy catalogue, we quantify the morphological fluctuations in the PSCz survey. We use a variety of measures, among them the family of scalar Minkowski functionals. We confirm the existence of significant fluctuations that are discernible in volume-limited samples out to 200Mpc/h. In contrast to earlier findings, comparisons with cosmological N-body simulations reveal that the observed fluctuations roughly agree with the cosmic variance found in corresponding mock samples. While two-point measures, e.g. the variance of count-in-cells, fluctuate only mildly, the fluctuations in the morphology on large scales indicate the presence of coherent structures that are at least as large as the sample.
Keywords
Cite
@article{arxiv.astro-ph/0101238,
title = {Morphological fluctuations of large-scale structure: the PSCz survey},
author = {M. Kerscher and K. Mecke and J. Schmalzing and C. Beisbart and T. Buchert and H. Wagner},
journal= {arXiv preprint arXiv:astro-ph/0101238},
year = {2009}
}
Comments
aa style, 13 pages, 9 figures, matching accepted version