Abstract The standard Λ Cold Dark Matter (ΛCDM) cosmological model provides a good
description of a wide range of astrophysical and cosmological data. However, there are a …

A number of challenges to the standard Λ CDM model have been emerging during the past
few years as the accuracy of cosmological observations improves. In this review we discuss …

The simplest ΛCDM model provides a good fit to a large span of cosmological data but
harbors large areas of phenomenology and ignorance. With the improvement of the number …

Despite the remarkable success of the Λ Cold Dark Matter (Λ CDM) cosmological model, a
growing discrepancy has emerged (currently measured at the level of∼ 4− 6 σ) between the …

The gravitational potential of initially Poisson distributed primordial black holes (PBH) can
induce a stochastic gravitational-wave background (SGWB) at second order in cosmological …

It is commonly assumed that the energy density of the Universe was dominated by radiation
between reheating after inflation and the onset of matter domination 54,000 years later …

Using some of the latest cosmological data sets publicly available, we derive the strongest
bounds in the literature on the sum of the three active neutrino masses, M ν, within the …

Many attempts to solve the Hubble tension with extended cosmological models combine an
enhanced relic radiation density, acting at the level of background cosmology, with new …

We study the production of primordial black hole (PBH) binaries and the resulting merger
rate, accounting for an extended PBH mass function and the possibility of a clustered spatial …

Stellar-mass primordial black holes (PBH) have been recently reconsidered as a dark matter
(DM) candidate after the aLIGO discovery of several binary black hole (BH) mergers with …