The origin and characteristic scale of galaxies

Details The origin and characteristic scale of galaxies The origin and characteristic scale of galaxies

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ap%26ss.116....1l&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 116, no. 1, Nov. 1985, p. 1-7.

Astronomy and Astrophysics

Astrophysics

Galactic Evolution, Neutrinos, Universe, Hydrogen Recombinations, Jeans Theory, Mass, Perturbation

Scientific paper

In this paper, the influence of the massive neutrino on the early evolution of adiabatic perturbations in the universe is investigated. It is shown that if the neutrino has a nonzero rest mass, the perturbations that are approximately in a critical, stable state (for the Jeans instability) before the recombination of hydrogen will possibly grow into a kind of astronomical object which will have a preferred scale after the recombination. A reasonable estimate of the order of magnitude shows that such objects seem to be corresponding to the observed galaxies.

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