The helium abundance and the isotropy of the universe

Details The helium abundance and the isotropy of the universe The helium abundance and the isotropy of the universe

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.204p..63j&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 204, Aug. 1983, p. 63P-68P.

Astronomy and Astrophysics

Astronomy

11

Abundance, Anisotropy, Big Bang Cosmology, Helium, Nuclear Fusion, Hubble Constant, Neutrinos, Nonequilibrium Thermodynamics, Shear Flow

Scientific paper

Primordial nucleosynthesis in a Bianchi type I universe is investigated. The effects, caused by the anisotropic momentum distribution of the electron neutrinos, neglected in earlier investigations, are taken into account. The authors show that the helium abundance is a rapidly decreasing function of the present value of the shear in the Hubble flow, which is contrary to what has been previously believed.

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