Local spherically symmetric perturbations of spatially flat Friedmann models

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The spherically symmetric perturbations in the spatially flat Friedman models are considered. It is assumed that the Friedmannian density and pressure are related through a linear equation of state. The perturbation is joined smoothly with an unperturbed Friedmann's background at the sound horizon of perturbation. Such junction is in accordance with the "birth" of a local perturbation as a result of the redistribution of matter. The solution of the Einstein's equations is obtained in linear approximation on a Friedmann's background near the the sound horizon of perturbation.
iopart, 10 pages

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General Relativity and Quantum Cosmology, Astrophysics

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http://salesiana.dossiersoluciones.com/handle/123456789/117593

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/gr-qc/0610137
 http://arxiv.org/abs/gr-qc/0610137

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arXiv