The Halo Boltzmann Equation
Cosmology and Nongalactic Astrophysics
2016-04-21 v2 High Energy Physics - Theory
Abstract
Dark matter halos are the building blocks of the universe as they host galaxies and clusters. The knowledge of the clustering properties of halos is therefore essential for the understanding of the galaxy statistical properties. We derive an effective halo Boltzmann equation which can be used to describe the halo clustering statistics. In particular, we show how the halo Boltzmann equation encodes a statistically biased gravitational force which generates a bias in the peculiar velocities of virialized halos with respect to the underlying dark matter, as recently observed in N-body simulations.
Cite
@article{arxiv.1508.07330,
title = {The Halo Boltzmann Equation},
author = {Matteo Biagetti and Vincent Desjacques and Alex Kehagias and Davide Racco and Antonio Riotto},
journal= {arXiv preprint arXiv:1508.07330},
year = {2016}
}
Comments
23 pages, 3 figures, comments are welcome, v2 matches published version in JCAP