Equatorial circular orbits in the Kerr-de Sitter spacetimes

Abstract

Equatorial motion of test particles in the Kerr-de Sitter spacetimes is considered. Circular orbits are determined, their properties are discussed for both the black-hole and naked-singularity spacetimes, and their relevance for thin accretion discs is established.

24 pages, 19 figures, REVTeX 4

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• Optical effects related to Keplerian discs orbiting Kehagias-Sfetsos naked singularities
• Ringed accretion disks: equilibrium configurations
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• Light paths of normal and phantom Einstein-Maxwell-dilaton black holes
• Quasinormal modes and strong cosmic censorship in near-extremal Kerr-Newman-de Sitter black-hole spacetimes
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• Ringed accretion disks: evolution of double toroidal configurations
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• Lux in obscuro: Photon Orbits of Extremal Black Holes Revisited
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• Extracting energy via magnetic reconnection from Kerr-de Sitter black holes
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• Scalar-tensor propagation of light in the inner solar system at the millimetric level
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• Equilibrium conditions of spinning test particles in Kerr-de Sitter spacetimes
• Slowly decaying resonances of massive scalar fields around Schwarzschild-de Sitter black holes
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• The Astrophysical Scales Set by the Cosmological Constant, Black-Hole Thermodynamics and Non-Linear Massive Gravity
• Motion of spinning particles in non asymptotically flat spacetimes
• Profiled spectral lines of Keplerian rings orbiting in the regular Bardeen black hole spacetimes
• The Komar mass function in the de-Rham-Gabadadze-Tolley non-linear theory of massive gravity
• Dynamical instability of polytropic spheres in spacetimes with a cosmological constant
• Lux in obscuro II: Photon Orbits of Extremal AdS Black Holes Revisited
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• Kerr black hole in de Sitter spacetime and observational redshift: Toward a new method to measure the Hubble constant
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• Influence of the cosmic repulsion on the MOND model of the Magellanic Cloud motion in the field of Milky Way
• The golden ratio in Schwarzschild-Kottler black holes
• Maximal Kerr de Sitter spacetimes
• Non linear massive gravity as a gravitational $\sigma$-model
• The equatorial motion of the charged test particles in Kerr-Newman-Taub-NUT spacetime
• Influence of cosmological expansion in local experiments
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• Point mass Cosmological Black Holes
• Aschenbach effect for spinning particles in Kerr-(A)dS spacetime
• The $\Lambda$ to zero limit of spacetimes and its physical interpretation
• Geodesic motion of a test particle around a noncommutative Schwarzchild Anti-de Sitter black hole
• The geodesics structure of Schwarzschild electromagnetic black hole
• Qualitative and quantitative features of orbits of massive particles and photons moving in Wyman geometry
• Dark matter halos modeled by polytropic spheres influenced by the relict cosmological constant and trapping polytropes forming supermassive black holes
• On causality violation on a Kerr-de Sitter spacetime
• On non-monotonic orbital velocity profiles around rapidly rotating Kerr-(anti)de Sitter black holes: acomment to the recently published results
• Shadows of naked singularities and superspinars related to the revisited Kerr-de Sitter spacetimes
• A short note on climbing gravity improbable: Superradiant ring fellowship of launching the high Lorentz-factor outflows/jets
• Frame-dragging: meaning, myths, and misconceptions
• Possible influence of a cosmic repulsion on large-scale jets: geometric viewpoint