Realistic fluids as source for dynamically accreting black holes in a cosmological background
arXiv:1207.1086 · doi:10.1103/PhysRevD.86.124020
Abstract
We show that a single imperfect fluid can be used as a source to obtain the generalized McVittie metric as an exact solution to Einstein's equations. The mass parameter in this metric varies with time thanks to a mechanism based on the presence of a temperature gradient. This fully dynamical solution is interpreted as an accreting black hole in an expanding universe if the metric asymptotes to Schwarzschild-de Sitter at temporal infinity. We present a simple but instructive example for the mass function and briefly discuss the structure of the apparent horizons and the past singularity.
5 pages, 2 figures. Updated references and minor changes to match the version accepted for publishing in PRD
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Cited by in corpus (8)
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- Constraints on the Cosmological Coupling of Black Holes from the Globular Cluster NGC 3201
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- Observational implications of cosmologically coupled black holes
- Dynamical model for primordial black holes