Black hole solutions surrounded by perfect fluid in Rastall theory

By Y. Heydarzade, F. Darabi. 2017

156 citations recorded by the source corpus.

Abstract In this work, we obtain uncharged∖charged Kiselev-like black holes as a new class of black hole solutions surrounded by perfect fluid in the context of Rastall theory. Then, we study the specific cases of the uncharged∖charged black holes surrounded by regular matter like dust and radiation, or exotic matter like quintessence, cosmological constant and phantom fields. By comparing the Kiselev-like black hole solutions in Rastall theory with the Kiselev black hole solutions in GR, we find an effective perfect fluid behavior for the black hole's surrounding field. It is shown that the corresponding effective perfect fluid has interesting characteristic features depending on the different ranges of the parameters in Rastall theory. For instance, Kiselev-like black holes surrounded by regular matter in Rastall theory may be considered as Kiselev black holes surrounded by exotic matter in GR, or Kiselev-like black holes surrounded by exotic matter in Rastall theory may be considered as Kiselev black holes surrounded by regular matter in GR.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/4b65cef88d7e737de8f698a40175d59e2ba6a190

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Rastall gravity is equivalent to Einstein gravity (2017, background): “Several authors have noted the absence of any widely accepted and complete Lagrangian formulation (or action formulation) for Rastall gravity [2, 12, 13, 16, 20], making it at best a phenomenological model, (as we have seen, a trivial phenomenological model).”