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Constraints on massive sterile plus active neutrino species in non minimal cosmologies
Elena Giusarma, Maria Archidiacono, Roland de Putter +2
Cosmological measurements are affected by the energy density of both active and sterile massive neutrinos. We extend here a recent analysis of current cosmological data to non mini…
The Impact of Assuming Flatness in the Determination of Neutrino Properties from Cosmological Data
Aaron Smith, Maria Archidiacono, Asantha Cooray +3
Cosmological data have provided new constraints on the number of neutrino species and the neutrino mass. However these constraints depend on assumptions related to the underlying c…
The Case for Dark Radiation
Maria Archidiacono, Erminia Calabrese, Alessandro Melchiorri
Combined analyses of recent cosmological data are showing interesting hints for the presence of an extra relativistic component, coined Dark Radiation. Here we perform a new search…
Amplitudes of thermal and kinetic Sunyaev-Zel'dovich signals from small-scale CMB anisotropies
Maria Archidiacono, Francesco De Bernardis, Asantha Cooray +4
While the arcminute-scale Cosmic Microwave Background (CMB) anisotropies are due to secondary effects, point sources dominate the total anisotropy power spectrum. At high frequenci…
Constraints on massive sterile neutrino species from current and future cosmological data
Elena Giusarma, Martina Corsi, Maria Archidiacono +4
Sterile massive neutrinos are a natural extension of the Standard Model of elementary particles. The energy density of the extra sterile massive states affects cosmological measure…