Energy extraction from rotating regular black hole via Comisso-Asenjo mechanism

Abstract

Recently, it has been demonstrated by Comisso and Asenjo that magnetic reconnection processes in the ergosphere of a Kerr black hole can provide us with a promising mechanism for extracting the rotational energy from it. In this paper, we study the energy extraction from the the newly proposed rotating regular black holes via this Comisso-Asenjo mechanism. This novel rotating regular black hole has an exponential convergence factor $e^{-k/r}$ on the mass term characterized by the regular parameter $k$ in the exponent. We explore the effects of this regular parameter on the magnetic reconnection as well as other critical parameters determining the Comisso-Asenjo process. The parameter spaces allowing energy extraction to occur are investigated. The power, efficiency and the power ratio to the Blandford-Znajek mechanism are studied. The results show that the regularity of the rotating black hole has significant effects on the energy extraction via the Comisso-Asenjo mechanism.

9 pages, 9 figures

References in corpus (21)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
• Rotating regular black holes
• First Sagittarius A* Event Horizon Telescope Results. IV. Variability, Morphology, and Black Hole Mass
• Why does steady-state magnetic reconnection have a maximum local rate of order 0.1?
• General Theory of the Plasmoid Instability
• Testing Rotating Regular Metrics as Candidates for Astrophysical Black Holes
• Magnetic Hair and Reconnection in Black Hole Magnetospheres
• Plasmoid Instability in Forming Current Sheets
• On the Value of the Reconnection Rate
• Magnetic Reconnection as a Mechanism for Energy Extraction from Rotating Black Holes
• Energy Extraction from a Rotating Black Hole by Magnetic Reconnection in Ergosphere
• Magnetic Reconnection and Energy Extraction from a Spinning Black Hole with Broken Lorentz Symmetry
• Blandford--Znajek monopole expansion revisited: novel non-analytic contributions to the power emission
• Effects of tidal charge on magnetic reconnection and energy extraction from spinning braneworld black hole
• Relativistic Magnetic Reconnection in Kerr Spacetime
• Extracting energy via magnetic reconnection from Kerr-de Sitter black holes
• Energy Extraction via Magnetic Reconnection in the Ergosphere of a rotating non-Kerr Black Hole
• A Vaidya-type spacetime with no singularities
• Scalar Perturbation Around Rotating Regular Black Hole: Superradiance Instability and Quasinormal Modes
• A regular version of the extremal RN spacetime

Cited by in corpus (5)

• Harvesting energy driven by Comisso-Asenjo process from Kerr-MOG black holes
• Energy Extraction via Magnetic Reconnection in Konoplya-Rezzolla-Zhidenko Parametrized Black Holes
• Energy extraction via magnetic reconnection in magnetized black holes
• Energy extraction through magnetic reconnection from a Kerr-Newman black hole in perfect fluid dark matter
• Different Regular Black Holes: Geodesic Structures of Test Particles