Dynamics of Magnetized and Magnetically Charged Particles around Regular Nonminimal Magnetic Black Holes

• Published in: Galaxies 2021-12, Vol.9 (4), p.71
• Main Authors: Rayimbaev, Javlon, Narzilloev, Bakhtiyor, Abdujabbarov, Ahmadjon, Ahmedov, Bobomurat
• Format: Article
• Language: English
• Subjects: Black holes; center-of-mass energy; Charged particles; Coupling; Electromagnetism; Event horizon; Harmonic oscillation; Liapunov exponents; magnetic field; Magnetic fields; Magnetic properties; magnetized particles; modified gravity; Orbits; Parameters; Quantum field theory; Spacetime; Theory of relativity; Yang-Mills fields
• ISSN: 2075-4434; 2075-4434
• DOI: 10.3390/galaxies9040071

The present paper is devoted to the study of the event horizon properties of spacetime around a regular nonminimal magnetic black hole (BH), together with dynamics of magnetized and magnetically charged particles in the vicinity of the BH. It is shown that the minimum value of the outer horizon of the extreme charged BH increases with the increase in coupling parameter. It reaches its maximum value of 1.5M when q→∞, while the maximal value of the BH charge decreases and tends toward zero. We also present a detailed analysis of magnetized particles’ motion around a regular nonminimal magnetic black hole. The particle’s innermost circular stable orbits (ISCOs) radius decreases as the magnetic charge and the parameter β increase and the coupling parameter of Yang–Mills field causes a decrease at the values of the magnetic charge near to its maximum. We show that the magnetic charge can mimic the spin of a rotating Kerr black hole up to the value of a=0.7893M, providing the same value for an ISCO of a magnetized particle with the parameter β=10.2 when the coupling parameter is q=0. Moreover, Lyapunov exponents, Keplerian orbits and harmonic oscillations of magnetized particles motion are also discussed.