2010
Author(s): Caramete, A (Caramete, Ana)
Edited by: Trache L; Stoica S; Smirnov A
Source: EXOTIC NUCLEI AND NUCLEAR - PARTICLE ASTROPHYSICS III: FROM NUCLEI TO STARS Book Series: AIP Conference Proceedings Volume: 1304 Pages: 444-448 Published Date: 2010
Abstract: This work sets bounds on the radiation content of the Universe and neutrino properties by using the WMAP-7 year CMB measurements complemented with most of the existing CMB and LSS data, imposing also self-consistent BBN constraints on the primordial helium abundance, Y-p. Lepton asymmetric cosmological models are considered, parametrized by the neutrino degeneracy parameter xi(v) and the variation of the relativistic degrees of freedom, Delta N-eff(oth), due to possible other physical processes occurred between BBN and structure formation epochs. The results bring an important improvement over the same parameters obtained by using the WMAP data alone, showing that the LSS measurements are useful tools in constraining the radiation content of the Universe during BBN.
Accession Number: WOS:000286911100059
Conference Title: Carpathian Summer School of Physics Conference
Conference Date: JUN 20-JUL 03, 2010
Conference Location: Sinaia, ROMANIA
Conference Sponsors: Abdus Salam Int Ctr Theoret Phys, Natl Author Sci Res, Horia Hulubei Natl Inst Phys & Nucl Engn, Texas A&M Univ, Cyclotron Inst, Central European Initiat