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Constraints on dark radiation from cosmological probes
Graziano Rossi, Christophe Yeche, Nathalie Palanque-Delabrouille +1
We present joint constraints on the number of effective neutrino species N_eff and the sum of neutrino masses M_nu, based on a technique which exploits the full information contain…
Robustness of cosmic neutrino background detection in the cosmic microwave background
Benjamin Audren, Emilio Bellini, Antonio J. Cuesta +9
The existence of a cosmic neutrino background can be probed indirectly by CMB experiments, not only by measuring the background density of radiation in the universe, but also by se…
Constraint on neutrino masses from SDSS-III/BOSS Ly forest and other cosmological probes
Nathalie Palanque-Delabrouille, Christophe Yèche, Julien Lesgourgues +11
We present constraints on the parameters of the CDM cosmological model in the presence of massive neutrinos, using the one-dimensional Ly forest power spectrum obtained with…
Strongest model-independent bound on the lifetime of Dark Matter
Benjamin Audren, Julien Lesgourgues, Gianpiero Mangano +2
Dark Matter is essential for structure formation in the late Universe so it must be stable on cosmological time scales. But how stable exactly? Only assuming decays into relativist…
Planck intermediate results. XXIV. Constraints on variation of fundamental constants
P. A. R. Ade, N. Aghanim, M. Arnaud +166
Any variation of the fundamental physical constants, and more particularly of the fine structure constant, , or of the mass of the electron, , would affect the recombinatio…
Probing nuclear rates with Planck and BICEP2
Eleonora Di Valentino, Carlo Gustavino, Julien Lesgourgues +4
Big Bang Nucleosynthesis (BBN) relates key cosmological parameters to the primordial abundance of light elements. In this paper, we point out that the recent observations of Cosmic…