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Constraints on Dark Matter from Primordial Nucleosynthesis

Published online by Cambridge University Press:  04 August 2017

Jean Audouze*
Affiliation:
Institut d'Astrophysique du CNRS, Paris, France and Laboratoire René Bernas, Orsay, France

Abstract

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Primordial nucleosynthesis which is responsible for the formation of the lightest elements (D, 3He, 4He and 7Li) provides a unique way to determine the present baryon density pB in the Universe and therefore the corresponding cosmological parameter ΩB. After a brief summary of the relevant abundance determinations and of the consequences of the Standard Big Bang nucleosynthesis, it is argued that one needs to call for specific models of chemical evolution of the Galaxy in order to reconcile the observations with the predictions of this model. In this context the predicted values for ΩB should range from 4 10−3 to 6 10−2. These values are significantly lower than those deduced from current M/L determinations.

Information

Type
Review Paper
Copyright
Copyright © Reidel 1987