Light Propagation in inhomogeneous Universes
Abstract
Using a multi-plane lensing method that we have developed, we follow the evolution of light beams as they propagate through inhomogeneous universes. We use a P3M code to simulate the formation and evolution of large-scale structure. The resolution of the simulations is increased to sub-Megaparsec scales by using a Monte Carlo method to locate galaxies inside the computational volume according to the underlying particle distribution. We consider cold dark matter models normalized to COBE, and perform a large parameter survey by varying the cosmological parameters Omega_0, lambda_0, H_0, and n (the tilt of the primordial power spectrum).
Keywords
Cite
@article{arxiv.astro-ph/9807127,
title = {Light Propagation in inhomogeneous Universes},
author = {Premana W. Premadi and Hugo Martel and Richard A. Matzner},
journal= {arXiv preprint arXiv:astro-ph/9807127},
year = {2007}
}
Comments
2 pages, gzip'ed tar file, including Latex source file, and style files. To be published in the proceedings of the Tokyo conference on Numerical Astrophysics (1998)