New Bounds on Omega Baryons from Observational Big Bang Nucleosynthesis

Details New Bounds on Omega Baryons from Observational Big Bang Nucleosynthesis New Bounds on Omega Baryons from Observational Big Bang Nucleosynthesis

1994-07-07

arxiv.org/abs/astro-ph/9407019v1

Astronomy and Astrophysics

Astrophysics

11 pages of uuencoded compressed PostScript with 2 figures

Scientific paper

We re-examine the systematic errors in the determination of the primordial helium abundance, $Y_{\rm P}$. We find that the systematics are significantly larger than the statistical errors. The uncertainty in (the determination of) $Y_{\rm P}$, is thus, larger than is currently claimed. Furthermore, most of the systematics lead to underestimate of $Y_{\rm P}$. The new upper bound allows cosmological models with no non-baryonic dark matter in which $\Omega_{baryons} = \Omega_{BBN} = \Omega_{dyn}$.

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