Evolution of spherical non-uniform perturbations in the universe

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Data

2010-11-01

Autores

Pereira, T. S. [UNESP]
Rosenfeld, Rogério [UNESP]
Sanoja, A. [UNESP]

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Epl Association, European Physical Society

Resumo

We study the evolution of inhomogeneous spherical perturbations in the universe in a way that generalizes the spherical top-hat collapse in a straightforward manner. For that purpose we will derive a dynamical equation for the density contrast in the context of a Lemaitre-Tolman-Bondi metric and construct solutions with and without a cosmological constant for the evolution of a spherical perturbation with a given initial radial profile. Copyright (C) EPLA, 2010

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Epl. Mulhouse: Epl Association, European Physical Society, v. 92, n. 3, p. 6, 2010.