The growth of density perturbations in Friedmann model universes with a decoupled radiation field |
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| Authors: | A. G. Emslie |
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| Affiliation: | (1) Dept. of Astronomy, The University, Glasgow, Scotland, U.K.;(2) Present address: Institute for Plasma Research, Stanford University, 94305 Stanford, CA, U.S.A. |
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| Abstract: | We examine the linear growth of density perturbations in homogeneous isotropic (Friedmann) model universes, including the effect of a decoupled radiation pressure field in the modelling. 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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