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=1981cha%26a...5..381f&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 5, Issue 4, p. 381-387.

Astronomy and Astrophysics

Astrophysics

Scientific paper

This paper discusses the effect of neutrinos with non-zero rest-mass on the clustering process in the early universe. The early universe is regarded as a two-component fluid, one component being the de-coupled neutrinos, and the other being matter and radiation, between the two there is only the gravitational coupling. The main conclusions are: (1) such neutrinos will cause clustering of matter before the epoch of re-combination; (2) the mass so clustered will be in the range of the mass of clusters of galaxies; (3) there exists a preferential clustering scale, corresponding to the earliest onset of Jeans instability; (4) if the rest-mass is below a certain value, then there will be no effect.

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