Applications of Halo Approach to Non-Linear Large Scale Structure Clustering

Details Applications of Halo Approach to Non-Linear Large Scale Structure Clustering Applications of Halo Approach to Non-Linear Large Scale Structure Clustering

2001-05-24

arxiv.org/abs/astro-ph/0105440v1

Astronomy and Astrophysics

Astrophysics

PhD Thesis at Univ. of Chicago; 170 Pages with 53 figures

Scientific paper

We present astrophysical applications of the recently popular halo model to describe large scale structure clustering. We formulate the power spectrum, bispectrum and trispectrum of dark matter density field in terms of correlations within and between dark matter halos. The halo approach uses results from numerical simulations and involves a profile for dark matter, a mass function for halos, and a description of halo biasing with respect to the linear density field. This technique can easily be extended to describe clustering of any property of the large scale structure, such as galaxies, baryons and pressure, provided that one formulate the relationship between such properties and dark matter. In detail, we discuss applications of the halo model for several observational probes of the local universe involving weak gravitational lensing, thermal Sunyaev-Zel'dovich (SZ) effect and the kinetic SZ effect. We also propose a new cosmological test using the redshift evolution of the angular power spectrum of halos and using a calibrated linear power spectrum, which acts as an effective standard ruler (Summary).

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