Bending of light in the Universe filled with quintessential dark energy

Abstract

As a local effect of dynamical dark energy, bending of light in the presence of a spherically symmetric and static black hole surrounded by quintessence has been studied. Having in mind recent observational data, we have treated the problem as a deviation from Kottler space-time. This deviation is measured by a perturbation parameter $\epsilon$ included in the equation of state parameter of quintessence as ${\omega }_q=-1+\frac{1}{3}\epsilon$. Here, the deflection angle is calculated and then the result is compared with \cite{Arakida:2011th} in the limit $\epsilon \to 0$ where the quintessence behaves like the cosmological constant. It is shown that unlike the cosmological constant, the effect of quintessence on the photon energy equation can not be absorbed into the definition of impact parameter. Moreover in this paper, we generalize the Kiselev black hole to the case that there is a modified Chaplygin gas as the dark energy component of the universe and show that the resulted metric can be reduced to the Kiselev metric by adjusting some arbitrary parameters.

arXiv comment14 pages, Accepted for publication in Phys. Rev. D

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Cited by in corpus (7)

• Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A${}^{\ast }$
• Study of null and time-like geodesics in the exterior of a Schwarzschild black hole with quintessence and cloud of strings
• Spherical photon orbits around a rotating black hole with quintessence and cloud of strings
• A Critical Assessment of Black Hole Solutions With a Linear Term in Their Redshift Function
• Regular Kiselev black hole with a de Sitter core
• Carathéodory's thermodynamics of the Schwarzschild black hole surrounded by quintessence
• Probing the parameters of a Schwarzschild black hole surrounded by quintessence and cloud of strings through four standard astrophysical tests