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Sourcing a Varying-Mass Black Hole in a Cosmological Background

  • Michele FontaniniEmail author
  • Daniel C. Guariento
Chapter
Part of the Springer Proceedings in Physics book series (SPPHY, volume 170)

Abstract

Systems in which the local gravitational attraction is coupled to the expansion of the Universe have been studied since the early stages of General Relativity. The McVittie metric is an example of such systems, being an exact solution of the Einstein equations representing a black hole in a cosmological background. Here, by using imperfect fluids, we construct a generalization of the McVittie solution in which the mass function of the black hole increases with time, effectively describing an accreting compact object in an expanding Universe. A novel mechanism involving temperature gradients is the key ingredient that leads to this result while still avoiding phantom fields and fine-tuning.

Keywords

Black Hole Mass Function Causal Structure Perfect Fluid Apparent Horizon 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This work is supported by FAPESP.

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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  1. 1.Instituto de Física, Universidade de São PauloSão PauloBrazil
  2. 2.Perimeter Institute for Theoretical PhysicsWaterlooCanada

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