Large--Scale Angular Correlations in CDM Models
Abstract
We generate artificial Lick maps using --body simulations and compare the angular correlation function, , measured from the simulations with the APM correlation. For the Gaussian CDM model, neither the standard biassed model nor a more evolved model (as suggested by the COBE data), reproduce the correlations on large angular scales. We come to a similar conclusion about CDM models with positively skewed initial fluctuation distributions. In contrast, models with initially negatively skewed fluctuations produce a that declines much more gently on large scales. Such models are therefore in principle capable of reconciling the lack of large--scale power of the CDM spectrum with the observed clustering of APM galaxies.
Cite
@article{arxiv.astro-ph/9302012,
title = {Large--Scale Angular Correlations in CDM Models},
author = {L. Moscardini and S. Borgani and P. Coles and F. Lucchin and S. Matarrese and A. Messina},
journal= {arXiv preprint arXiv:astro-ph/9302012},
year = {2009}
}
Comments
12 pages plus 2 figures available upon request by e-mail as post-script files or by ordinary mail. To be compiled with LaTeX, with the a4.sty macros, to be extracted from the bottom of the text file