Bibcode
Luridiana, V.
Referencia bibliográfica
The cosmological model, proceedings of the XXXVIIth Rencontres de Moriond, Edited by Y. Giraud-Héraud, C. Magneville, J. Tran Thanh Van, The Gioi Publishers (Vietnam), 159, 2003.
Advertised on:
10
2003
Número de citas
8
Número de citas referidas
3
Descripción
The primordial abundance of 4He, YP, is one of the hottest
themes in present-day astronomy, mostly due to its cosmological
relevance. The disagreement between different determinations has been
currently reduced to the 1-2% level, but these differences are still
large enough to have deep implications for Big-Bang nucleosynthesis. It
is therefore crucial to estimate precisely the uncertainties involved in
the measurement of YP. Here, I review the methods used in the
determination of YP and the related uncertainties. I also
discuss some recent results, and emphasize the assumptions underlying
the differences among them.