Cosmic nucleosynthesis

Details Cosmic nucleosynthesis Cosmic nucleosynthesis

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pasp...98.1049m&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 98, Oct. 1986, p. 1049-1056.

Astronomy and Astrophysics

Astronomy

6

Abundance, Cosmology, Helium Isotopes, Nuclear Fusion, Elementary Particle Interactions, Gravitational Constant, Light Elements, Neutrinos

Scientific paper

A survey is made of the standard model of nucleosynthesis, and of the various ways that the standard model can be modified to break the relation between 4He and lighter isotope production. It has been suggested that the agreement with predictions of 2H, 3He, and 4He is strained because 4He abundances are observed to be about as low as allowed by the standard model. The author investigates whether remotely plausible effects could lower the model prediction of 4He. He finds only two: a variable gravitational constant, smaller during nucleosynthesis, and a nonzero neutrino number.

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