Prospects in Nuclear Cosmology:. From the Big-Bang to Supernovae

Details Prospects in Nuclear Cosmology:. From the Big-Bang to Supernovae Prospects in Nuclear Cosmology:. From the Big-Bang to Supernovae

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003omeg.conf....3k&link_type=abstract

ORIGIN OF MATTER AND EVOLUTION OF GALAXIES 2000. Proceedings of the International Symposium. Held 19-21 January 2000 in Universi

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We study primordial nucleosynthesis in the presence of a net lepton asymmetry. We explore a previously unnoted region of the parameter space in which very large baryon densities 0.1 ≤ Ωb ≤ 1 can be accommodated within the light-element constraints. This parameter space consists of large νμ and ντ degeneracies with a moderate νe degeneracy. Constraints on this parameter space from cosmic microwave background fluctuations are discussed [1]. We also study the r-process nucleosynthesis in neutrino-driven winds of gravitational core collapse SNell. Appropriate physical conditions are found for successful r-process nucleosynthesis, which meet with several features of heavy elements discovered recently in metal-deficient halo stars.

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