Astrophysical insights into magnetic Penrose process around parameterized Konoplya–Rezzolla–Zhidenko black hole

Abstract In this study, we investigate the parameterized Konoplya–Rezzolla–Zhidenko (KRZ) black hole (BH) spacetime in the presence of an external asymptotically uniform magnetic field. We first examine the innermost stable circular orbit (ISCO) radii for both neutral and charged test particles, dem...

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Main Authors: Tursunali Xamidov, Sanjar Shaymatov, Pankaj Sheoran, Bobomurat Ahmedov
Format: Article
Language:English
Published: SpringerOpen 2024-12-01
Series:European Physical Journal C: Particles and Fields
Online Access:https://doi.org/10.1140/epjc/s10052-024-13658-w
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author Tursunali Xamidov
Sanjar Shaymatov
Pankaj Sheoran
Bobomurat Ahmedov
author_facet Tursunali Xamidov
Sanjar Shaymatov
Pankaj Sheoran
Bobomurat Ahmedov
author_sort Tursunali Xamidov
collection DOAJ
description Abstract In this study, we investigate the parameterized Konoplya–Rezzolla–Zhidenko (KRZ) black hole (BH) spacetime in the presence of an external asymptotically uniform magnetic field. We first examine the innermost stable circular orbit (ISCO) radii for both neutral and charged test particles, demonstrating that the deformation parameters, $$\delta _1$$ δ 1 and $$\delta _2$$ δ 2 , reduce the ISCO values. Subsequently, we assess the energy efficiency of the magnetic Penrose process (MPP) for an axially symmetric parameterized BH, analyzing the effects of the deformation parameters and the magnetic field on the energy extraction process. Our findings indicate that the rotational deformation parameter $$\delta _2$$ δ 2 is crucial for the efficiency of energy extraction from the BH. The synergy between the rotational deformation parameter and the magnetic field significantly boosts the energy extraction efficiency, with values exceeding $$100\%$$ 100 % . Interestingly, for extremal BHs with negative $$\delta _2$$ δ 2 values, the energy efficiency increases, in contrast to Kerr BHs where the MPP effect diminishes. Additionally, we explore the astrophysical implications of the MPP by deriving the maximum energy of a proton escaping from the KRZ parameterized BH due to the beta decay of a free neutron near the horizon. Our results show that negative $$\delta _2$$ δ 2 values require stronger magnetic fields to achieve equivalent energy levels for high-energy protons, providing deeper insights into high-energy astrophysical phenomena around the parameterized BH.
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spelling doaj-art-56a6fe8b84ef41c68a995a5b8ea44b8b2025-02-02T12:39:39ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522024-12-01841211510.1140/epjc/s10052-024-13658-wAstrophysical insights into magnetic Penrose process around parameterized Konoplya–Rezzolla–Zhidenko black holeTursunali Xamidov0Sanjar Shaymatov1Pankaj Sheoran2Bobomurat Ahmedov3Institute of Fundamental and Applied Research, National Research University TIIAMEInstitute of Fundamental and Applied Research, National Research University TIIAMEDepartment of Physics, School of Advanced Sciences, Vellore Institute of TechnologyInstitute of Fundamental and Applied Research, National Research University TIIAMEAbstract In this study, we investigate the parameterized Konoplya–Rezzolla–Zhidenko (KRZ) black hole (BH) spacetime in the presence of an external asymptotically uniform magnetic field. We first examine the innermost stable circular orbit (ISCO) radii for both neutral and charged test particles, demonstrating that the deformation parameters, $$\delta _1$$ δ 1 and $$\delta _2$$ δ 2 , reduce the ISCO values. Subsequently, we assess the energy efficiency of the magnetic Penrose process (MPP) for an axially symmetric parameterized BH, analyzing the effects of the deformation parameters and the magnetic field on the energy extraction process. Our findings indicate that the rotational deformation parameter $$\delta _2$$ δ 2 is crucial for the efficiency of energy extraction from the BH. The synergy between the rotational deformation parameter and the magnetic field significantly boosts the energy extraction efficiency, with values exceeding $$100\%$$ 100 % . Interestingly, for extremal BHs with negative $$\delta _2$$ δ 2 values, the energy efficiency increases, in contrast to Kerr BHs where the MPP effect diminishes. Additionally, we explore the astrophysical implications of the MPP by deriving the maximum energy of a proton escaping from the KRZ parameterized BH due to the beta decay of a free neutron near the horizon. Our results show that negative $$\delta _2$$ δ 2 values require stronger magnetic fields to achieve equivalent energy levels for high-energy protons, providing deeper insights into high-energy astrophysical phenomena around the parameterized BH.https://doi.org/10.1140/epjc/s10052-024-13658-w
spellingShingle Tursunali Xamidov
Sanjar Shaymatov
Pankaj Sheoran
Bobomurat Ahmedov
Astrophysical insights into magnetic Penrose process around parameterized Konoplya–Rezzolla–Zhidenko black hole
European Physical Journal C: Particles and Fields
title Astrophysical insights into magnetic Penrose process around parameterized Konoplya–Rezzolla–Zhidenko black hole
title_full Astrophysical insights into magnetic Penrose process around parameterized Konoplya–Rezzolla–Zhidenko black hole
title_fullStr Astrophysical insights into magnetic Penrose process around parameterized Konoplya–Rezzolla–Zhidenko black hole
title_full_unstemmed Astrophysical insights into magnetic Penrose process around parameterized Konoplya–Rezzolla–Zhidenko black hole
title_short Astrophysical insights into magnetic Penrose process around parameterized Konoplya–Rezzolla–Zhidenko black hole
title_sort astrophysical insights into magnetic penrose process around parameterized konoplya rezzolla zhidenko black hole
url https://doi.org/10.1140/epjc/s10052-024-13658-w
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AT sanjarshaymatov astrophysicalinsightsintomagneticpenroseprocessaroundparameterizedkonoplyarezzollazhidenkoblackhole
AT pankajsheoran astrophysicalinsightsintomagneticpenroseprocessaroundparameterizedkonoplyarezzollazhidenkoblackhole
AT bobomuratahmedov astrophysicalinsightsintomagneticpenroseprocessaroundparameterizedkonoplyarezzollazhidenkoblackhole