Hugh M. P. Couchman
Claim Your Author Page
Ensure your research is discoverable on Semantic Scholar. Claiming your author page allows you to personalize the information displayed and manage your publications. Semantic Scholar automatically creates author pages based on data aggregated from public sources and our publisher partners.
The cold dark matter model has become the leading theoretical picture for the formation of structure in the Universe. This model, together with the theory of cosmic inflation, makes a clear… Expand
We combine data from a number of N-body simulations to predict the abundance of dark haloes in cold dark matter (CDM) universes over more than four orders of magnitude in mass. A comparison of… Expand
We introduce the Making Galaxies in a Cosmological Context (MaGICC) program of smoothed particle hydrodynamics (SPH) simulations. We describe a parameter study of galaxy formation simulations of an… Expand
We use gigaparticle N-body simulations to study galaxy cluster populations in Hubble volumes of ΛCDM and ΓCDM world models.
For simulations of fluid dynamics in astrophysics, physical viscosity and diffusion are typically neglected. However, in this high Reynolds number regime, real fluids become highly turbulent and… Expand
Dwarf galaxies pose substantial challenges for cosmological models. In particular, current models predict a dark-matter density that is divergent at the center, which is in sharp contrast with… Expand
We present an analysis of the clustering evolution of dark matter in four cold dark matter (CDM) cosmologies. We use a suite of high-resolution, 17 million particle, N-body simulations that sample… Expand
The standard cosmological model, now strongly constrained by direct observations of the Universe at early epochs, is very successful in describing the evolution of structure on large and intermediate… Expand
We investigate the internal structure of clusters of galaxies in high-resolution N-body simulations of four different cosmologies. There is a higher proportion of disordered clusters in… Expand
We study the clustering properties of metals in the intergalactic medium (IGM) as traced by 619 Civ and 81 Siiv absorption components with N ≥ 10 12 cm -2 and 316 Mg II and 82 Fell absorption… Expand