Analytic model for galaxy and dark matter clustering

Warm Dark Matter Model of Galaxy Formation

Cold Dark Matter (CDM) models of galaxy formation had been remarkably successful to explain a number of observations in the past decade. However, with both the theoretical modeling and the observations being improved, CDM models have been very recently shown to have excessive clustering on the sub-galactic scale. Here I discuss a solution, based on our high-resolution numerical simulations, to ...

Clustering of galaxy clusters in cold dark matter universes

We use very large cosmological N-body simulations to obtain accurate predictions for the two-point correlations and power spectra of mass-limited samples of galaxy clusters. We consider two currently popular cold dark matter (CDM) cosmogonies, a critical density model (tCDM) and a flat low density model with a cosmological constant (LCDM). Our simulations each use 10 particles to follow the mas...

An Analytic Model for the Spatial Clustering of Dark Matter Haloes

We develop a simple analytic model for the gravitational clustering of dark matter haloes to understand how their spatial distribution is biased relative to that of the mass. The statistical distribution of dark haloes within the initial density eld (assumed Gaussian) is determined by an extension of the Press-Schechter formalism. Modi cations of this distribution caused by gravitationally indu...

An analytic model for the spatial clustering of dark matter haloes

Galaxy Formation and Dark Matter

The challenge of dark matter may be addressed in two ways; by studying the confrontation of structure formation with observation and by direct and indirect searches. In this review, I will focus on those aspects of dark matter that are relevant for understanding galaxy formation, and describe the outlook for detecting the most elusive component, non-baryonic dark matter. Galaxy formation theory...