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- W2770945144 abstract "In this work, we obtain the Kerr-anti-de-sitter/de-sitter black hole solutions of the Einstein field equation in the quintessence-like dark matter or phantom-like dark matter using Newman-Janis method and Mathematica package. From the horizon equation $g_{rr}=0$, we get the expression between the dark matter parameter $alpha$ and the cosmological constant when one cosmological horizon $r_{Lambda}$ exists. For $Lambda=0$, we find that $alpha$ is in the range of $0<alpha<2M$ in the quintessence-like dark matter and $-7.18M<alpha<0$ in the phantom-like dark matter. For the positive cosmological constant ($Kerr-AdS BH$), it makes $alpha_{max}$ to decrease for the quintessence-like dark matter and makes $alpha_{min}$ to increase for the phantom-like dark matter. For the negative cosmological constant ($Kerr-dS BH$), it makes $alpha_{max}$ to increase for the quintessence-like dark matter and makes $alpha_{min}$ to increase for the phantom-like dark matter. The singularity of the black hole is similar to that of the rotational black hole. When there is enough dark matter around the black hole, the black hole spacetime will be changed remarkably. We also study the geodesic motion using the Hamilton-Jacobi formalism, and analyze the rotation velocity of the black hole surrounded by dark matter on the equatorial plane. When $alpha$ is in the above range, the stable orbit will exist. Finally we analyze the rotation velocity for different parameter $alpha$ and black hole spin $a$." @default.
- W2770945144 created "2017-12-04" @default.
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- W2770945144 date "2017-11-13" @default.
- W2770945144 modified "2023-09-27" @default.
- W2770945144 title "Kerr-Anti-De-Sitter/De-Sitter Black Hole In Dark Matter Background" @default.
- W2770945144 hasPublicationYear "2017" @default.
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