Charged particle dynamics in black hole split monopole magnetosphere

• Published in: The European physical journal. C, Particles and fields Particles and fields, 2023-08, Vol.83 (8), p.704-14, Article 704
• Main Authors: Khan, Saeed Ullah, Chen, Zhi-Min
• Format: Article
• Language: English
• Subjects: Astronomy; Astrophysics and Cosmology; Beta decay; Black holes; Charged particles; Circular orbits; Collapse; Elementary Particles; Geomagnetism; Hadrons; Heavy Ions; Magnetic fields; Magnetosphere; Magnetospheres; Measurement Science and Instrumentation; Neutral particles; Nuclear Energy; Nuclear Physics; Orbits; Particle decay; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Regular Article - Theoretical Physics; String Theory
• ISSN: 1434-6052; 1434-6044; 1434-6052
• DOI: 10.1140/epjc/s10052-023-11897-x

This article examines particle dynamics and acceleration in the magnetic Penrose process (MPP) around Kerr black hole (BH) in a split monopole magnetic field. The characteristics of charged particle motion around magnetized BHs reveal four differen feasible regimes of ionized Keplerian disk behaviour: survival in regular epicyclic motion; changing into a chaotic toroidal state; collapse due to escaping along magnetic field lines and collapse due to falling into the BHs. By making use of the effective potential, we have investigated the position of stable circular orbits for both in- and off-equatorial planes. We observed that the positive magnetic field P > 0 increases the stability of effective potential, whereas P < 0 diminishes its stability. We show that ultra-efficient energy extraction from spinning supermassive BH controlled by the MPP can pay the bill. We anticipate neutral particle ionization, such as neutron beta-decay, edging closer to the BH horizon, charging protons to more than 10 20 eV for a supermassive BH of mass 10 9 M ⊙ and a magnetic field of strength 10 4 G.