Nonlinear Cosmological Structure Formation
Abstract
I present a general discussion of the evolution and model-dependence of both the linear and nonlinear power spectrum of density fluctuations. The features of the linear power spectrum in cosmological models with cold dark matter (CDM) and cold+hot dark matter (C+HDM) are reviewed, and useful analytical approximations are summarized. Cosmological numerical simulation results are then used to illustrate the process of nonlinear gravitational clustering and to compute the nonlinear power spectrum. An analytical approximation relating the linear and nonlinear power spectrum in C+HDM models is presented.
Cite
@article{arxiv.astro-ph/9810001,
title = {Nonlinear Cosmological Structure Formation},
author = {Chung-Pei Ma},
journal= {arXiv preprint arXiv:astro-ph/9810001},
year = {2009}
}
Comments
16 pages, 7 postscript figures, AAS LaTeX v4.0. Appeared in "Long-Range Correlations in Astrophysical Systems", eds. Buchler, Dufty, and Kandrup. Full-colored Figures 2 and 4 available at http://dept.physics.upenn.edu/~www/cpma/image