Evolution of spherical non-uniform perturbations in the universe

Pereira, T. S.; Rosenfeld, Rogério; Sanoja, A.

Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/24297

Title:

Evolution of spherical non-uniform perturbations in the universe

Author(s):

Institution:

Universidade Estadual Paulista (UNESP)
Universidade Estadual de Londrina (UEL)

ISSN:

0295-5075

Sponsorship:

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Abstract:

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

Issue Date:

1-Nov-2010

Citation:

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

Time Duration:

6

Publisher:

Epl Association, European Physical Society

Source:

http://dx.doi.org/10.1209/0295-5075/92/39001

URI:

Access Rights:

Acesso restrito

Type:

outro

Source:

http://repositorio.unesp.br/handle/11449/24297

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