The clustering of baryonic matter. I: a halo-model approach

Understand

In this paper I generalize the halo model for the clustering of dark matter in order to produce the power spectra of the two main baryonic matter components in the Universe: stars and hot gas.

• As a natural extension, this can be also used to describe the clustering of all mass.
• According to the design of the halo model, the large-scale power spectra of the various matter components are physically connected with the distribution of each component within bound structures and thus, ultimately, with the complete set of physical processes that drive the formation of galaxies and galaxy clusters.
• Besides being practical for cosmological and parametric studies, the semi-analytic model presented here has also other advantages.