Circular Motion and Energy Extraction in a Rotating Black Hole
arXiv:1812.11036 · doi:10.1016/j.dark.2019.100263
Abstract
This paper explores the circular geodesics of neutral test particles on an equatorial plane around a rotating black hole. After using equations of motion of scalar-tensor-vector gravity with the circular geodesics of null-like particles, we find the equation of photon orbit. With the help of an effective potential form, we have examined the stable regimes of photons orbits. The Lyapunov exponent, as well as the effective force acting on photons, is also investigated. We examine the energy extraction from a black hole via Penrose process. Furthermore, we discuss the negative energy state and the efficiency of energy extraction. We have made compare our results with that obtained for some well known black holes models. We concluded that the efficiency of the energy extraction decreases with the increase of dimensionless parameter of theory and increases as spin parameter increases.
arXiv comment24 pages, 9 figures
References in corpus (29)
- Extended Theories of Gravity
- Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
- Geodesic stability, Lyapunov exponents and quasinormal modes
- Scalar-Tensor-Vector Gravity Theory
- Black Holes in Modified Gravity (MOG)
- Causes of Irregular Energy Density in Gravity
- The MOG weak field approximation and observational test of galaxy rotation curves
- Particle and light motion in a space-time of a five-dimensional rotating black hole
- Schwarzschild black hole surrounded by quintessence: Null geodesics
- Incidences between points and lines on a two-dimensional variety
- Modified Gravity Black Holes and their Observable Shadows
- The Influence of Modification of Gravity on the Dynamics of Radiating Spherical Fluids
- The MOG Weak Field approximation II. Observational test of Chandra X-ray Clusters
- Black Hole Thermodynamics in MOdified Gravity (MOG)
- Particle Motion around Black Hole in Horava-Lifshitz Gravity
- Particle Dynamics Near Kerr-MOG Black Hole
- Cavity Evolution and Instability Constraints of Relativistic Interiors
- Accretion disks around black holes in Scalar-Tensor-Vector Gravity
- Energy Extraction from Higher Dimensional Black Holes and Black Rings
- Influence of Electric Charge and Modified Gravity on Density Irregularities
- Particle motion and collisions around rotating regular black hole
- Particle collisions and optical effects in the mining Kerr--Newman spacetimes
- Inner-most stable circular orbit in Kerr-MOG black hole
- Circular Geodesics in the Kerr-Newman-Taub-NUT Space-time
- Particle motion around magnetized black holes: Preston-Poisson space-time
- Propagation of Electromagnetic Waves in MOG: Gravitational Lensing
- A Modified Gravity and its Consequences for the Solar System, Astrophysics and Cosmology
- Lux in obscuro: Photon Orbits of Extremal Black Holes Revisited
- Rotating non-Kerr black hole and energy extraction
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- Circular motion around a regular rotating Hayward black hole
- Circular geodesics in Kerr-Newman-Kasuya black hole
- Evolution of Braneworld Kerr-Newman Naked Singularities