384 citations · 1.8k across the 35 of their papers we have counts for
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Impact of memory-burdened black holes on primordial gravitational waves in light of Pulsar Timing Array
Peter Athron, Marco Chianese, Satyabrata Datta +2
Blue-tilted Gravitational Waves (BGWs) have been proposed as a potential candidate for the cosmic gravitational waves detected by Pulsar Timing Arrays (PTA). In the standard cosmol…
Cosmic microwave background constraints on secret interactions among sterile neutrinos
Francesco Forastieri, Massimiliano Lattanzi, Gianpiero Mangano +3
Secret contact interactions among eV sterile neutrinos, mediated by a massive gauge boson (with ), and characterized by a gauge coupling , have been proposed…
Unveiling secret interactions among sterile neutrinos with big-bang nucleosynthesis
Ninetta Saviano, Ofelia Pisanti, Gianpiero Mangano +1
Short-baseline neutrino anomalies suggest the existence of low-mass ( m \sim O(1)~eV) sterile neutrinos ν_s. These would be efficiently produced in the early universe by oscillatio…
The strongest bounds on active-sterile neutrino mixing after Planck data
Alessandro Mirizzi, Gianpiero Mangano, Ninetta Saviano +4
Light sterile neutrinos can be excited by oscillations with active neutrinos in the early universe. Their properties can be constrained by their contribution as extra-radiation, pa…
Multi-momentum and multi-flavour active-sterile neutrino oscillations in the early universe: role of neutrino asymmetries and effects on nucleosynthesis
Ninetta Saviano, Alessandro Mirizzi, Ofelia Pisanti +3
We perform a study of the flavour evolution in the early universe of a multi-flavour active-sterile neutrino system with parameters inspired by the short-baseline neutrino anomalie…
Coarse-Grained Cosmological Perturbation Theory
Massimo Pietroni, Gianpiero Mangano, Ninetta Saviano +1
Semi-analytical methods, based on Eulerian perturbation theory, are a promising tool to follow the time evolution of cosmological perturbations at small redshifts and at mildly non…