Weak gravitational lensing of background galaxies provides a direct probe of the projected
matter distribution in and around galaxy clusters. Here, we present a self-contained …

This paper introduces C olossus, a public, open-source python package for calculations
related to cosmology, the large-scale structure (LSS) of matter in the universe, and the …

We use the IllustrisTNG cosmological, hydrodynamical simulations to test fundamental
assumptions of the mass-based halo occupation distribution (HOD) approach to modelling …

We perform a structural decomposition of galaxies identified in three cosmological
hydrodynamical simulations by applying Gaussian mixture models (GMMs) to the kinematics …

In the outer regions of a galaxy cluster, galaxies either may be falling into the cluster for the
first time or have already passed through the cluster centre at some point in their past. To …

Approximate methods to populate dark-matter haloes with galaxies are of great utility to
galaxy surveys. However, the limitations of simple halo occupation models (HODs) preclude …

A major question in ΛCDM is what this theory actually predicts for the properties of subhalo
populations. Subhalos are difficult to accurately simulate and to find within simulations, and …

The splashback radius R sp, the apocentric radius of particles on their first orbit after falling
into a dark matter halo, has recently been suggested to be a physically motivated halo …

Non-gravitational interactions between dark matter particles with strong scattering, but
relatively small annihilation and dissipation, has been proposed to match various …

We devise a method to constrain self-interacting dark matter (SIDM) from observations of
quadruply imaged quasars, and apply it to five self-interaction potentials with a long-range …