NUMERICAL STUDY OF A PERTURBED EINSTEIN-DESITTER COSMOLOGICAL MODEL
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Data
1991-02-20
Autores
Fagundes, H. V.
Kwok, S. F.
Título da Revista
ISSN da Revista
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Editor
Iop Publishing Ltd
Resumo
Given the ever-increasing scale of structures discovered in the universe, we solve Einstein's equations numerically, under simplifying assumptions, to examine how this lack of uniformity affects the metric of Einstein-de Sitter cosmology. The results confirm the qualitative conclusion of Barrow, that a large density contrast is compatible with much smaller metric perturbations. The contribution of this peculiar gravity to the redshift might complicate studies of peculiar motions of galaxies, although it appears that the distortion is small for nearby clusters.
Descrição
Palavras-chave
COSMOLOGY, GALAXIES, CLUSTERING, RELATIVITY
Como citar
Astrophysical Journal. Bristol: Iop Publishing Ltd, v. 368, n. 2, p. 337-340, 1991.