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arXiv · 1105.6099

Exact spherically-symmetric inhomogeneous model with n perfect fluids

Valerio Marra·Mikko Paakkonen
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Abstract

We present the exact equations governing the dynamics of a spherically-symmetric inhomogeneous model with n decoupled and non-comoving perfect fluids. Thanks to the use of physically meaningful quantities we write the set of 3+2n equations in a concise and transparent way. The n perfect fluids can have general equations of state, thus making the model extremely flexible to study a large variety of cosmological and astrophysical problems. As applications we consider a model sourced by two non-comoving dust components and a cosmological constant, and a model featuring dust and a dark energy component with negligible speed of sound.

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BibTeXRIS

Valerio Marra, Mikko Paakkonen. 2011-12-20. Exact spherically-symmetric inhomogeneous model with n perfect fluids. https://doi.org/10.1088/1475-7516%2F2012%2F01%2F025

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