Ultra-light dark matter is a class of dark matter models (DM), where DM is composed by
bosons with masses ranging from 10^-24\, eV< m< eV 10-24 eV< m< eV. These models …

Although dark matter is a central element of modern cosmology, the history of how it became
accepted as part of the dominant paradigm is often ignored or condensed into an anecdotal …

We review recent developments and results in testing general relativity (GR) at cosmological
scales. The subject has witnessed rapid growth during the last two decades with the aim of …

Cosmic shear is the distortion of images of distant galaxies due to weak gravitational lensing
by the large-scale structure in the Universe. Such images are coherently deformed by the …

In this review we present a thoroughly comprehensive survey of recent work on modified
theories of gravity and their cosmological consequences. Amongst other things, we cover …

Abstract Euclid is a European Space Agency medium-class mission selected for launch in
2020 within the cosmic vision 2015–2025 program. The main goal of Euclid is to understand …

A wealth of astronomical data indicate the presence of mass discrepancies in the Universe.
The motions observed in a variety of classes of extragalactic systems exceed what can be …

Gravitational waves (GWs) provide a new tool to probe the nature of dark energy (DE) and
the fundamental properties of gravity. We review the different ways in which GWs can be …

The status of experimental tests of general relativity and of theoretical frameworks for
analyzing them is reviewed and updated. Einstein's equivalence principle (EEP) is well …

Abstract Euclid is a European Space Agency medium-class mission selected for launch in
2019 within the Cosmic Vision 2015–2025 program. The main goal of Euclid is to …