Lyman Alpha Absorption in The Cosmic Web
Abstract
We describe large scale structure at high redshift in terms of the Cosmic Web picture for {S,Lambda,O,H}CDM models: how galactic-scale ``peak-patches'', filaments and membranes create an interconnected intergalactic medium. The ideas are applied to our Ly forest simulations of ``shear-field patches''. We discuss simulation method and design, resolution dependence, the statistical combination of patches, UV flux scaling, and whether filtered Zel'dovich maps are useful. The response to changes in power spectrum shape and amplitude, and in cosmological parameters, is described. We also show Omega_b h^2 derived from UV rescaling is overestimated if the resolution is not adequate.
Cite
@article{arxiv.astro-ph/9710102,
title = {Lyman Alpha Absorption in The Cosmic Web},
author = {J. Richard Bond and James W. Wadsley},
journal= {arXiv preprint arXiv:astro-ph/9710102},
year = {2007}
}
Comments
6 pages, LaTeX, with figure 1a,b,c,d, 2, 3 included. uses conf_iap.sty To appear in Structure and Evolution of the IGM from QSO Absorption Line Systems, Proc. 13th IAP Colloquium, ed. P. Petitjean and S. Charlot, Nouvelles Frontieres, Paris Text and colour figures also available at ftp://ftp.cita.utoronto.ca/bond/iap97