Clustering in a two-component universe

Details Clustering in a two-component universe Clustering in a two-component universe

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...140...77f&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 140, no. 1, Nov. 1984, p. 77-81.

Astronomy and Astrophysics

Astrophysics

29

Cosmology, Galactic Clusters, Mass Distribution, Neutrinos, Baryons, Lyman Spectra, Quasars, Red Shift

Scientific paper

Clustering on large and small scales in the early universe is examined theoretically to discuss the evolution of the distribution of invisible matter. Attention is constrained to a two-component universe distinguished by very disparate densities and Jeans lengths, i.e., dominant and non-dominant components. The non-dominant component, with the lower density and Jeans length values, develops inhomogeneities on scales less than those of the dominant component and therefore appears at an earlier epoch than those of the dominant component. The Jeans length of the two-component system is dependent on the non-dominant component in the case of gravitational clustering. Several numerical examples are presented to show how the non-dominant component inhomogeneities appear first. Further consideration is devoted to validating the model, and it is found that small scale objects such as quasars, with redshifts over 2, should have more uniform distributions than objects with redshifts less than 2.

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