Non-monotonic Keplerian velocity profiles around near-extreme braneworld Kerr black holes

Abstract

We study the non-monotonic Keplerian velocity profiles related to locally non-rotating frames (LNRF) in the field of near-extreme braneworld Kerr black holes and naked singularities in which the non-local gravitational effects of the bulk are represented by a braneworld tidal charge $b$ and the 4D geometry of the spacetime structure is governed by the Kerr-Newman geometry. We show that positive tidal charge has a tendency to restrict the values of the black hole dimensionless spin $a$ admitting existence of the non-monotonic Keplerian LNRF-velocity profiles; the non-monotonic profiles exist in the black hole spacetimes with tidal charge smaller than $b=0.41005$ (and spin larger than $a=0.76808$). With decreasing value of the tidal charge (which need not be only positive), both the region of spin allowing the non-monotonicity in the LNRF-velocity profile around braneworld Kerr black hole and the velocity difference in the minimum-maximum parts of the velocity profile increase implying growing astrophysical relevance of this phenomenon.

References in corpus (10)

• Near-infrared polarimetry setting constraints on the orbiting spot model for Sgr A* flares
• Gravitational Effects of Rotating Braneworld Black Holes
• Humpy LNRF-velocity profiles in accretion discs orbiting nearly extreme Kerr black holes. A possible relation to QPOs
• Mass estimate of the XTE J1650-500 black hole from the Extended Orbital Resonance Model for high-frequency QPOs
• Plasma Magnetosphere of Rotating Magnetized Neutron Star in the Braneworld
• Non-monotonic orbital velocity profiles around rapidly rotating Kerr-(anti-)de Sitter black holes
• Measurement of Mass and Spin of Black Holes with QPOs
• Black Holes Admitting Strong Resonant Phenomena
• Distribution of kilohertz QPO frequencies and their ratios in the atoll source 4U 1636-53
• On non-monotonic orbital velocity profiles around rapidly rotating Kerr-(anti)de Sitter black holes: acomment to the recently published results

Cited by in corpus (4)

• A Slowly Rotating Black Hole in Horava-Lifshitz Gravity and a 3+1 Dimensional Topological Black Hole: Motion of Particles and BSW Mechanism
• Aschenbach effect and circular orbits in static and spherically symmetric black hole backgrounds
• Static spheres and Aschenbach effect for black holes in massive gravity
• Aschenbach effect for spinning particles in Kerr-(A)dS spacetime