Repetitive Penrose process in Konoplya-Zhidenko rotating non-Kerr black holes

Abstract

This paper investigates the repetitive Penrose process in Konoplya-Zhidenko rotating non-Kerr black hole, exploring the influence of the deformation parameter on the repetitive Penrose process. After a brief review of the Konoplya-Zhidenko rotating non-Kerr black hole, we study the fundamental equations of the Penrose process in this spacetime, examine the iterative stopping conditions required for the repetitive Penrose process, and obtain the corresponding numerical results. It is concluded that, in addition to previously observed phenomena, under the same decay radius, a larger initial dimensionless deformation parameter $\hat{\eta }$ leads to greater values of the energy return on investment and energy utilization efficiency, particularly at higher decay radii. Furthermore, a smaller initial $\hat{\eta }$ results in a larger maximum value of the energy return on investment. For energy utilization efficiency, the initial $\hat{\eta }$ should take an intermediate value to maximize its peak. Additionally, we find that a larger initial $\hat{\eta }$ corresponds to a smaller maximum value of the extracted energy.

References in corpus (19)

• Efficient Generation of Jets from Magnetically Arrested Accretion on a Rapidly Spinning Black Hole
• Ultraluminous X-Ray Sources in External Galaxies
• A Measurement of the Electromagnetic Luminosity of a Kerr Black Hole
• Kerr Black Holes as Particle Accelerators to Arbitrarily High Energy
• Magnetically Driven Jets in the Kerr Metric
• Simulations of Ultrarelativistic Magnetodynamic Jets from Gamma-ray Burst Engines
• The Blandford-Znajek Process as a Centeral Engine for a Gamma Ray Burst
• Detection of gravitational waves from black holes: Is there a window for alternative theories?
• Activation of the Blandford-Znajek mechanism in collapsing stars
• "Meissner effect" and Blandford-Znajek mechanism in conductive black hole magnetospheres
• Quantum Schwarzschild geometry in effective-field-theory models of gravity
• Magnetic Reconnection as a Mechanism for Energy Extraction from Rotating Black Holes
• Testing the Kerr metric with the iron line and the KRZ parametrization
• Quasi-periodic oscillations as a tool for testing the Kerr metric: A comparison with gravitational waves and iron line
• Exploring Ladder Symmetry and Love Numbers for Static and Rotating Black Holes
• Strong gravitational lensing by a Konoplya-Zhidenko rotating non-Kerr compact object
• Energy extraction from a Konoplya-Zhidenko rotating non-Kerr black hole
• Third law of repetitive electric Penrose processes
• General relativistic viscous accretion flow around Konoplya-Zhidenko black hole