Accurate mass and velocity functions of dark matter halos

1 code implementation • 6 Feb 2017 • Johan Comparat, Francisco Prada, Gustavo Yepes, Anatoly Klypin

We measure and model the halo mass function, its covariance matrix w. r. t halo mass and the large scale halo bias.

Cosmology and Nongalactic Astrophysics

Toward a halo mass function for precision cosmology: the limits of universality

1 code implementation • 18 Mar 2008 • Jeremy L Tinker, Andrey V Kravtsov, Anatoly Klypin, Kevork Abazajian, Michael S Warren, Gustavo Yepes, Stefan Gottlober, Daniel E Holz

We measure the mass function of dark matter halos in a large set of collisionless cosmological simulations of flat LCDM cosmology and investigate its evolution at z<~2.