Effect of non-zero rest-mass of neutrinos on clustering in the early universe

Details Effect of non-zero rest-mass of neutrinos on clustering in the early universe Effect of non-zero rest-mass of neutrinos on clustering in the early universe

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981acaps...1..291f&link_type=abstract

(Acta Astrophysica Sinica, vol. 1, 1981, p. 291-300.) Chinese Astronomy and Astrophysics, vol. 5, Dec. 1981, p. 381-387. Transl

Astronomy and Astrophysics

Astrophysics

1

Big Bang Cosmology, Galactic Clusters, Jeans Theory, Neutrinos, Universe, Astronomical Models, Decoupling, Galactic Evolution

Scientific paper

The effect of neutrinos with non-zero rest-mass on the clustering process in the early universe is discussed with emphasis on the stage of Jeans instability. The early universe is regarded as a two-component fluid, one of which is the neutrino gas, and the other of which is matter and radiation. It is suggested that the neutrinos will cause clustering of matter before the epoch of re-combination, and the resulting clustered mass will be in the range of the mass of clusters of galaxies. It is also suggested that a preferential clustering scale exists, corresponding to the earliest onset of Jeans instability, and if the rest-mass is below a certain value, there will be no effect.

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