The large-scale peculiar velocity field in flat models of the universe

Details The large-scale peculiar velocity field in flat models of the universe The large-scale peculiar velocity field in flat models of the universe

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...316..475v&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 316, May 15, 1987, p. 475-482. NASA-supported research.

Mathematics

Logic

31

Astronomical Models, Cosmology, Universe, Velocity Distribution, Dark Matter, Flatness, Mass Distribution

Scientific paper

The inflationary universe scenario predicts a flat universe and both adiabatic and isocurvature primordial density perturbations with the Zel'dovich spectrum. The two simplest realizations, models dominated by hot or cold dark matter, seem to be in conflict with observations. Flat models with two components of mass density, where one of the components of mass density is smoothly distributed, are examined, and the large-scale peculiar velocity field for these models is computed. For the smooth component the authors consider relativistic particles, a relic cosmological term, and light strings. At present the observational situation is unsettled, but, in principle, the large-scale peculiar velocity field is a very powerful discriminator between these different models.

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