The accelerating expansion of the universe is the most surprising cosmological discovery in
many decades, implying that the universe is dominated by some form of “dark energy” with …

The most successful cosmological models to date envision structure formation as a
hierarchical process in which gravity is constantly drawing lumps of matter together to form …

Abstract The SAMI Galaxy Survey will observe 3400 galaxies with the Sydney-AAO Multi-
object Integral-field spectrograph (SAMI) on the Anglo-Australian Telescope in a 3-yr survey …

We derive an accurate mass estimator for dispersion-supported stellar systems and
demonstrate its validity by analysing resolved line-of-sight velocity data for globular clusters …

Numerous methods for finding clusters at moderate to high redshifts have been proposed in
recent years, at wavelengths ranging from radio to X-rays. In this paper we describe a new …

Strong gravitational lenses with measured time delays between the multiple images allow a
direct measurement of the time-delay distance to the lens, and thus a measure of …

We investigate the gravitational lensing properties of dark matter halos with Navarro, Frenk
& White (NFW) density profiles and derive an analytic expression for the radial dependence …

We use the halo occupation model to calibrate galaxy group finders in magnitude limited
redshift surveys. Because, according to the current scenario of structure formation, galaxy …

We show, with the help of large N-body simulations, that both the real-space two-point
correlation function and pairwise velocity dispersion of galaxies can be measured reliably …

We examine the properties of dark matter haloes within a rich galaxy cluster using a high-
resolution simulation that captures the cosmological context of a cold dark matter universe …