The helium abundance and the isotropy of the Universe
Open Access
- 1 September 1983
- journal article
- research article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 204 (1) , 63P-68P
- https://doi.org/10.1093/mnras/204.1.63p
Abstract
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. We 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.Keywords
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