Astronomical observations reveal a major deficiency in our understanding of physics—the
detectable mass is insufficient to explain the observed motions in a huge variety of systems …

Galaxies in the early Universe appear to have grown too big too fast, assembling into
massive, monolithic objects more rapidly than anticipated in the hierarchical Lambda cold …

ABSTRACT The Cold Spot is a puzzling large-scale feature in the Cosmic Microwave
Background temperature maps and its origin has been subject to active debate. As an …

Cosmic voids are a powerful probe of cosmology and are one of the core observables of
upcoming galaxy surveys. The cross-correlations between voids and other large-scale …

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 Universe expansion rate has two different but very precise values ($67.4~\pm~ 0.5$ and
$73.30~\pm~ 1.04$ km s− 1 Mpc− 1) that are not compatible. This problem, known as a …

We consider a phenomenological model of dark matter with an equation-of-state w that is
negative and changing at late times. We show this couples the H 0 and S 8 tensions …

We report and analyse a serendipitous finding of foregrounds in the cosmic microwave
background (CMB) radiation associated with extended galactic haloes. Using the cross …

The late-time integrated Sachs-Wolfe (ISW) imprint of superstructures is sourced by evolving
large-scale potentials due to a dominant dark energy component in the ΛCDM model. The …

We introduce a spatial averaging scheme and use it to study the evolution of spatial
averages in large-scale simulations of cosmological structure formation performed with the …