Weak gravitational lensing, the deflection of light by mass, is one of the best tools to
constrain the growth of cosmic structure with time and reveal the nature of dark energy. I …

Cosmic shear data contains a large amount of cosmological information encapsulated in the
non-Gaussian features of the weak lensing mass maps. Weak lensing studies mostly rely on …

We perform large-scale cosmological simulations that solve Einstein's equations directly via
numerical relativity. Starting with initial conditions sampled from the cosmic microwave …

We investigate the importance of local gravity during preheating, the nonlinear dynamics
that may be responsible for starting the process of reheating the Universe after inflation. We …

We present a numerical weak-lensing analysis that is fully relativistic and non-perturbative
for the scalar part of the gravitational potential and first order in the vector part, frame …

We present the halo number counts and its two-point statistics, the observable angular
power spectrum, extracted for the first time from relativistic N-body simulations. The halo …

We apply and extend standard tools for void statistics to cosmological simulations that solve
Einstein's equations with numerical relativity (NR). We obtain a simulated void catalogue …

The apparent distribution of large-scale structures in the Universe is sensitive to the
velocity/potential of the sources as well as the potential along the line of sight through the …

Standard cosmological models rely on an approximate treatment of gravity, utilizing
solutions of the linearized Einstein equations as well as physical approximations. In an era …

In this work we present the first results from a new ray-tracing tool to calculate cosmological
distances in the context of fully nonlinear general relativity. We use this tool to study the …