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SUMMARY:New constraints on extensions of the standard cosmological model -
  Eleonora Di Valentino (IAP Paris)
DTSTART:20161128T130000Z
DTEND:20161128T140000Z
UID:TALK67657@talks.cam.ac.uk
CONTACT:47984
DESCRIPTION:The Cosmic Microwave Background (CMB) temperature and polariza
 tion anisotropy measurements from the Planck mission have significantly im
 proved previous constraints on the neutrino masses\, as well as the bounds
  on extended models with massive sterile neutrino states or extra particle
 s\, as for example thermal axions. In this talk firstly I will show the re
 cent constraints from cosmology for the thermal axion mass and the neutrin
 o sector\, by considering several combination of datasets and scenarios. I
 n particular\, I will show how the inclusion of additional low redshift pr
 iors is mandatory in order to sharpen the CMB neutrino bounds\, and that w
 e are close to test the neutrino mass hierarchy with existing cosmological
  probes. Secondly\, I will discuss how these constraints can change by tak
 ing into account the possibility that the primordial power spectrum could 
 assume a more general shape than the usual power law description. Finally\
 , I will present cosmological constraints in a significantly extended scen
 ario\, varying up to 12 cosmological parameters simultaneously\, by lookin
 g for a new concordance model that should solve at the same time all the c
 urrent tensions between the Planck data and the new direct measurements of
  the Hubble constant by Riess et al. 2016 and the parameters from weak len
 sing surveys\, such as CFHTLenS and KiDS-450.
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
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