In this paper, we consider the effects of adding curvature in extended cosmologies involving
a free-to-vary neutrino sector and different parametrizations of dark energy (DE). We make …

We revisit the joint constraints in the mixed hot dark matter scenario in which both thermally
produced QCD axions and relic neutrinos are present. Upon recomputing the cosmological …

We present an updated data-analysis comparison of the most recent observations of the
cosmic microwave background temperature anisotropies and polarization angular power …

We study the global agreement between the most recent observations of the cosmic
microwave background (CMB) temperature and polarization anisotropies angular power …

The presence of light sterile neutrinos is one of the unanswered questions of particle
physics. The cosmological counterpart is represented by dark radiation, ie, any form of …

Inflationary gravitational waves, behaving as additional radiation in the Early Universe, can
increase the effective number of relativistic species (N eff) by a further correction that …

We consider axions coupled to nucleons and photons only through the nucleon electric-
dipole moment (EDM) portal. This coupling is a model-independent feature of QCD axions …

The Etherington reciprocity theorem, or distance duality relation (DDR), relates the mutual
scaling of cosmic distances in any metric theory of gravity where photons are massless and …

Flavor violating axion couplings can be in action before recombination, and they can fill the
early Universe with an additional radiation component. Working within a model-independent …

We present model-marginalized limits on mixed hot dark matter scenarios, which consider
both thermal neutrinos and thermal QCD axions. A novel aspect of our analyses is the …