8-13 September 2013
Asilomar, California
US/Pacific timezone

Planck results and neutrino physics: constraints and tensions

9 Sep 2013, 14:00
20m
Asilomar, California

Asilomar, California

Asilomar Conference Grounds, 800 Asilomar Avenue, Pacific Grove, CA 93950-3704
Oral Cosmology Cosmology I

Speaker

Dr Massimiliano Lattanzi (Dipartimento di Fisica e Scienze della Terra - Università di Ferrara)

Description

Observations of the cosmic microwave background (CMB) have the potential to constrain the properties of relic neutrinos, and possibly of additional light relic particles in the Universe. In my talk I will present the constraints on the mass of the three Standard Model neutrinos and on the density of massless relics that can be obtained using the recent observations of the CMB temperature anisotropies from the Planck satellite, in combination with the WMAP polarization (WP) data. I will also show how these constraints change when the Planck+WP dataset is augmented by other data, like Planck's own estimate of the lensing potential, observations of the CMB at small scales, and other astrophysical probes. Finally, I will discuss some of the "tensions" involving the value of parameters, like the lensing amplitude A_lens and the Hubble constant H_0, as estimated from different data combinations, with a particular focus on their effect on neutrino-related quantities.

Primary author

Dr Massimiliano Lattanzi (Dipartimento di Fisica e Scienze della Terra - Università di Ferrara)

Presentation Materials

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