The growth of density perturbations in Friedmann model universes with a decoupled radiation field

Details The growth of density perturbations in Friedmann model universes with a decoupled radiation field The growth of density perturbations in Friedmann model universes with a decoupled radiation field

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980ap%26ss..71..363e&link_type=abstract

Astrophysics and Space Science, vol. 71, no. 2, Aug. 1980, p. 363-370.

Astronomy and Astrophysics

Astrophysics

Astronomical Models, Big Bang Cosmology, Perturbation Theory, Universe, Density, Galactic Evolution, Inhomogeneity, Isotropic Media, Radiation Pressure

Scientific paper

The linear growth of density perturbations in homogeneous isotropic (Friedmann) model universes is examined, including the effect of a decoupled radiation pressure field in the modeling. Amplification factors for density perturbations in all models are derived numerically, and it is shown that the effect of radiation pressure is to decelerate the growth of such condensations, thus requiring larger inhomogeneities to be produced at radiation decoupling in order to produce protogalaxies.

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