Shadow and deflection angle of rotating black holes in perfect fluid dark matter with a cosmological constant

By Sumarna Haroon, M. Jamil, K. Jusufi, Kai Lin, Robert B. Mann. Physical Review D, 2018

151 citations recorded by the source corpus.

The presence of dark matter around a black hole remarkably affects its spacetime. We consider the effects of dark matter on the shadow of a new solution to the Einstein equations that describes a rotating black hole in the background of perfect dark matter fluid (PFDM), along with its extension to nonzero cosmological constant $\Lambda$. Working in Boyer-Lindquist coordinates, we consider the effects of the PFDM parameter $\alpha$ on the shadow cast by a black hole with respect to an observer at position $(r_o,\theta_o)$. By applying the Gauss-Bonnet theorem to the optical geometry we find that notable distortions from a Kerr black hole can occur. We describe their dependence on $\alpha$ and $\Lambda$.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/1de01a34a869c08a84fcb5e5c16d92ec28902b04

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In Astronomy and Astrophysics

1. O. Tsupko
2. V. Perlick
3. G. Bisnovatyi-Kogan
4. M. Werner
5. A. Rogers
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In Nuclear and High Energy Physics

1. O. Tsupko
2. V. Perlick
3. G. Bisnovatyi-Kogan
4. Sushant G. Ghosh
5. Rahul Kumar

Citations in the corpus

• Shadows and deflection angle of charged and slowly rotating black holes in Einstein-Æther theory (2019, unknown): “[13] S.”
• Calculating black hole shadows: Review of analytical studies (2021, background): “[121], a class of regular black holes, see Neves [122], and several braneworld black holes, see Amarilla and Eiroa, [123], Eiroa and Sendra [124] and Neves [125].”