We review theories of dark matter (DM) beyond the collisionless paradigm, known as self-
interacting dark matter (SIDM), and their observable implications for astrophysical structure …

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 …

Astrophysical observations spanning dwarf galaxies to galaxy clusters indicate that dark
matter (DM) halos are less dense in their central regions compared to expectations from …

We introduce the Hydrangea simulations, a suite of 24 cosmological hydrodynamic zoom-in
simulations of massive galaxy clusters (M 200c= 1014–1015.4 M⊙) with baryon particle …

Context. The quest for the cosmological parameters that describe our universe continues to
motivate the scientific community to undertake very large survey initiatives across the …

We probe the self-interactions of dark matter with relaxed galaxy groups and clusters using
observational data from strong and weak lensing and stellar kinematics. Our analysis uses …

We investigate the internal structure of elliptical galaxies at z∼ 0.2 from a joint lensing–
dynamics analysis. We model Hubble Space Telescope images of a sample of 23 galaxy …

We analyse strongly lensed images in eight galaxy clusters to measure their dark matter
density profiles in the radial region between 10 kpc and 150 kpc, and use this to constrain …

We introduce the the three hundred project, an endeavour to model 324 large galaxy
clusters with full-physics hydrodynamical re-simulations. Here we present the data set and …

We use the eagle cosmological hydrodynamic simulation suite to study the specific angular
momentum of galaxies, j, with the aims of (i) investigating the physical causes behind the …