Oblique magnetic fields and the role of frame dragging
Sign Up to like & getrecommendations! Published in 2019 at "Astronomische Nachrichten"
DOI: 10.1002/asna.201913569
Abstract: Magnetic null points can develop near the ergosphere boundary of a rotating black hole by the combined effects of strong gravitational field and the frame-dragging mechanism. The electric component does not vanish in the magnetic… read more here.
Keywords: frame dragging; rotating black; field; black hole ... See more keywords
Love symmetry in higher-dimensional rotating black hole spacetimes
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep03(2025)036
Abstract: We develop a method for constructing a 1-parameter family of globally-defined Love symmetry generators in rotating black hole spacetimes of general dimension. The key ingredient is to focus on the vicinity of the (physical) outer… read more here.
Keywords: rotating black; black hole; hole; hole spacetimes ... See more keywords
Exact greybody factors for the brane scalar field of five-dimensional rotating black holes
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep06(2019)041
Abstract: A bstractWe study scalar perturbations of the five-dimensional rotating black holes and find an exact solution giving exact description of the Hawking radiation. Mathematically, the full solution for this spin-zero field is expressed in terms… read more here.
Keywords: greybody factors; greybody; black holes; rotating black ... See more keywords
Observational signatures from horizonless black shells imitating rotating black holes
Sign Up to like & getrecommendations! Published in 2017 at "Journal of High Energy Physics"
DOI: 10.1007/jhep07(2018)070
Abstract: A bstractIn arXiv:1705.10172 it was proposed that string theory replaces Schwarzschild black holes with horizonless thin shells with an AdS interior. In this paper we extend the analysis to slowly rotating black holes, solving the… read more here.
Keywords: signatures horizonless; black holes; rotating black; black hole ... See more keywords
Effective Field Theory for the perturbations of a slowly rotating black hole
Sign Up to like & getrecommendations! Published in 2021 at "Journal of High Energy Physics"
DOI: 10.1007/jhep12(2021)183
Abstract: Abstract We develop the effective theory for perturbations around black holes with scalar hair, in two directions. First, we show that the scalar-Gauss-Bonnet theory, often used as an example exhibiting scalar black hole hair, can… read more here.
Keywords: effective theory; black hole; slowly rotating; rotating black ... See more keywords
Gravitational shockwaves on rotating black holes
Sign Up to like & getrecommendations! Published in 2019 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-019-2512-7
Abstract: We present an exact solution of Einstein’s equation that describes the gravitational shockwave of a massless particle on the horizon of a Kerr–Newman black hole. The backreacted metric is of the generalized Kerr–Schild form and… read more here.
Keywords: gravitational shockwaves; shockwaves rotating; black holes; rotating black ... See more keywords
Thermodynamics of charged rotating black strings in extended phase space
Sign Up to like & getrecommendations! Published in 2025 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-025-03441-x
Abstract: We investigate the thermodynamics of asymptotically Anti-de Sitter charged and rotating black strings in extended phase space, in which the cosmological constant is interpreted as thermodynamic pressure and the thermodynamic volume is defined as its… read more here.
Keywords: thermodynamics; rotating black; charged rotating; black strings ... See more keywords
Circular motion and energy extraction in a rotating black hole
Sign Up to like & getrecommendations! Published in 2019 at "Physics of the Dark Universe"
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… read more here.
Keywords: energy extraction; black hole; rotating black; energy ... See more keywords
Fluid analogs for rotating black holes
Sign Up to like & getrecommendations! Published in 2018 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/aad0fe
Abstract: Fluid analog models for gravity are based on the idea that any spacetime geometry admits a reinterpretation in which space is thought of as a fluid flowing with a prescribed velocity. This fluid picture is… read more here.
Keywords: analogs rotating; black holes; rotating black; fluid ... See more keywords
Rotating black holes in Einstein-aether theory
Sign Up to like & getrecommendations! Published in 2022 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ac5053
Abstract: We introduce new methods to numerically construct for the first time stationary axisymmetric black hole solutions in Einstein-aether theory and study their properties. The key technical challenge is to impose regularity at the spin-2, 1,… read more here.
Keywords: aether theory; region; black holes; holes einstein ... See more keywords
Shadow of rotating black holes surrounded by dark fluid with Chaplygin-like equation of state and constraints from EHT results
Sign Up to like & getrecommendations! Published in 2024 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ad721f
Abstract: In this work, we mainly focus on testing the spacetime properties around black holes surrounded by a dark fluid, which are potential candidates for dark energy described by the Chaplygin-like equation of state through its… read more here.
Keywords: rotating black; black hole; dark fluid; black holes ... See more keywords