Cavities in high density universes

Details Cavities in high density universes Cavities in high density universes

Jun 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....99l..12o&link_type=abstract

Astronomy and Astrophysics, vol. 99, no. 1, June 1981, p. L12-L14.

Astronomy and Astrophysics

Astrophysics

8

Astronomical Models, Cosmology, Gravitational Effects, Space Density, Universe, Big Bang Cosmology, Gravitational Collapse, Neutrinos, Relativity, Space-Time Functions

Scientific paper

Occhionero et al. (1981) have constructed a theoretical model in order to explain the large-scale voids which exist between clusters of galaxies. In the model, large cavities develop around matter condensations. However, for a reasonable mass of 10 to the 15th solar masses, and for an Einstein- de Sitter Universe, the typical cavity dimension is of the order of 10 Mpc rather 100 Mpc as required by the observations. In the considered analysis, the algorithm of the previous investigation has been generalized to conduct a study of the issue in cosmological models with arbitrary parameter values. An expression is reported for the typical dimension of the cavities. The possibility is pointed out that matter condensations are in reality neutrino condensations, ordinary baryonic matter being only a one percent contamination of the total. The assumption has to be made that neutrinos are condensed where the galaxies are seen.

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