We present an approach to describe the nonlinear matter power spectrum for a mixed dark matter (cold dark matter plus neutrinos having total mass of âˆ¼ 0.1eV) model based on cosmological perturbationâ€¦ (More)

We examine how lensing tomography with the bispectrum and power spectrum can constrain cosmological parameters and the equation of state of dark energy. Our analysis uses the full information at theâ€¦ (More)

We explore the ability of weak lensing surveys to locate mass ive clusters. We use both analytic models of dark matter halos and mock weak lensing surveys gen erated from a large cosmologicalN -bodyâ€¦ (More)

We study the impact of systematic errors on planned weak-lensing surveys and compute the requirements on their contributions so that they are not a dominant source of the cosmological parameter errorâ€¦ (More)

By obtaining photometric redshift information, tomograph y allows us to cross-correlate galaxy ellipticities in different source redshift bins. The cross-correlation is n on-vanishing because theâ€¦ (More)

With the advent of high-quality surveys in cosmology the ful l three-point correlation function will be a valuable statistic for describing structure forma tion models. It contains information onâ€¦ (More)

A wide-field galaxy redshift survey allows one to probe galaxy clustering at largest spatial scales, which carries invaluable information on horizon-scale physics complementarily to the cosmicâ€¦ (More)

Using separate universe simulations, we accurately quantify super-sample covariance (SSC), the typically dominant sampling error for matter power spectrum estimators in a finite volume, which arisesâ€¦ (More)

Intracluster magnetic fields with âˆ¼ Î¼G strength induce Faraday rotation on the cosmic microwave background (CMB) polarization. Measurements of this effect can potentially probe the detailed structureâ€¦ (More)

In general relativity, the average velocity field of dark matter around galaxy clusters is uniquely determined by the mass profile. The latter can be measured through weak lensing. We propose a newâ€¦ (More)