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We investigate the motion of massive charged and spinning test particles around a charged dyonic black hole spacetime surrounded by perfect fluid scalar dark matter field. We obtain the equations of motion and find the expressions for the…

General Relativity and Quantum Cosmology · Physics 2022-06-07 Sanjar Shaymatov , Pankaj Sheoran , Sanjay Siwach

In this paper, we show that in weak field limit Schwarzschild Bertotti-Robinson black hole (Schwarzschild-BR BH) turns into Schwarzschild black hole immersed in external uniform magnetic field which is given in 1. The dynamics of both…

General Relativity and Quantum Cosmology · Physics 2026-03-23 Yunqiao Xu , Uktamjon Uktamov , Pierros Ntelis , Ahmadjon Abdujabbarov , Bobomurat Ahmedov , Chengxun Yuan

We investigate the geodesic motion of charged particles in the vicinity of regular black holes with a Minkowski core, embedded in a uniform magnetic field, and study the influences of magnetic field and regular black hole parameter on the…

General Relativity and Quantum Cosmology · Physics 2025-04-02 Mingyu Guo , Menghe Wu , Xiaomei Kuang , Hong Guo

In the present work, we aimed to investigate the dynamics of spinning charged and magnetized test particles around both electrically and magnetically charged quantum-improved black holes. We derive the equations of motion for charged…

General Relativity and Quantum Cosmology · Physics 2023-11-07 Jose Miguel Ladino , Carlos A. Benavides-Gallego , Eduard Larrañaga , Javlon Rayimbaev , Farrux Abdulxamidov

We investigate the particle motion around a Schwarzschild black hole immersed in a swirling Bertotti-Robinson-Bonnor-Melvin background. This spacetime provides a physically well-motivated framework for studying how the two different…

General Relativity and Quantum Cosmology · Physics 2026-05-26 Wenbin Li , Yu-Qi Lei , Xian-Hui Ge

A way to test electromagnetic field and spacetime properties around black holes is by considering the dynamics of test particles. In fact, in real astrophysical scenarios, it is hard to determine spacetime geometry which is dominating due…

General Relativity and Quantum Cosmology · Physics 2023-08-11 Farrux Abdulxamidov , Javlon Rayimbaev , Ahmadjon Abdujabbarov , Zdeněk Stuchlík

We study the motion of uncharged particles and photons in the background of a magnetically charged Euler-Heisenberg (EH) black hole (BH) with scalar hair. The spacetime can be asymptotically (A)dS or flat. After investigating particle…

General Relativity and Quantum Cosmology · Physics 2024-06-12 Dionysios P. Theodosopoulos , Thanasis Karakasis , George Koutsoumbas , Eleftherios Papantonopoulos

The Rayleigh criterion is used to study the stability of circular orbits of particles moving around static black holes surrounded by different axially symmetric structures with reflection symmetry, like disks, rings and halos. We consider…

General Relativity and Quantum Cosmology · Physics 2009-11-10 Patricio. S. Letelier

We revisit the motion of massless particles with anyonic spin in the horizon of Kerr--Newman geometry. As recently shown, such particles can move within the horizon of the black hole due to the coupling of charges associated with a…

General Relativity and Quantum Cosmology · Physics 2023-03-28 Finnian Gray , David Kubiznak , T. Rick Perche , Jaime Redondo-Yuste

In this paper we study the dynamics of trajectory of a spinning particle in a Schwarzschild spacetime involving a global monopole. We set up the equations of motion and find three types of trajectories. We study the conditions that a…

General Relativity and Quantum Cosmology · Physics 2014-09-01 Qihong Huang , Juhua Chen , Yongjiu Wang

We perform force-free simulations for a neutron star orbiting a black hole, aiming at clarifying the main magnetosphere properties of such binaries towards their innermost stable circular orbits. Several configurations are explored, varying…

High Energy Astrophysical Phenomena · Physics 2021-09-08 Federico Carrasco , Masaru Shibata , Oscar Reula

We study the motion of test particles around Kerr--Bertotti--Robinson (KBR) black hole (BH) and explore how the three defining parameters the mass $M$, rotation parameter $a$, and magnetic parameter $B$ influence their dynamics. We derive…

General Relativity and Quantum Cosmology · Physics 2026-02-10 G. Mustafa , Orhan Donmez , Dhruba Jyoti Gogoi , Sushant G. Ghosh , Ibrar Hussain , Chengxun Yuan

Dynamics of charged particles in the vicinity of a rotating black hole embedded in the external large-scale magnetic field is numerically investigated. In particular, we consider a non-axisymmetric model in which the asymptotically uniform…

High Energy Astrophysical Phenomena · Physics 2015-05-20 Ondřej Kopáček , Vladimír Karas

We study the motion of massive particles with electric and magnetic charges in the background of a magnetically charged Garfinkle-Horowitz-Strominger stringy black hole. We solve analytically the equations of motion of the test particles…

General Relativity and Quantum Cosmology · Physics 2017-06-07 P. A. González , Marco Olivares , Eleftherios Papantonopoulos , Joel Saavedra , Yerko Vásquez

We study the motion of a charged test particle in the spacetime with a spherically symmetric black hole which is immersed in a monopole magnetic field. We show that the radial motion of the charged test particle is governed by completely…

General Relativity and Quantum Cosmology · Physics 2026-03-30 Ken-ichi Nakao , Yota Endo , Hideki Ishihara , Kenta Matsuo , Kensuke Sueto , Koudai Ueda , Hirotaka Yoshino

We study the circular orbits of charged particles around a weakly charged Kerr black hole immersed in a weak, axisymmetric magnetic field. Firstly, we review the circular orbits of neutral particles. We then review the circular orbits of…

General Relativity and Quantum Cosmology · Physics 2022-10-04 A. M. Al Zahrani

The study of charged particle dynamics in the combined gravitational and magnetic field can provide important theoretical insight into astrophysical processes around black holes. In this paper, we explore the charged particle dynamics in…

General Relativity and Quantum Cosmology · Physics 2024-03-19 Martin Kološ , Misbah Shahzadi , Arman Tursunov

We investigate the dynamics of charged and neutral particles in the vicinity of a Schwarzschild-like black hole immersed in an external magnetic field. We find that the innermost stable circular orbits (ISCOs) for charged particles are…

General Relativity and Quantum Cosmology · Physics 2025-07-01 Sojida Mannobova , Gulnisa Abdukayumova , Farruh Atamurotov , Ahmadjon Abdujabbarov , X. Gao , G. Mustafa

We employ the Poincar\'{e} section, fast Lyapunov indicator, recurrence analysis, bifurcation diagram and basins of attraction to investigate the dynamical behaviors of the motion of particles around a new dyonic Kerr-Newman black hole…

General Relativity and Quantum Cosmology · Physics 2025-11-12 Deshui Cao , Lina Zhang , Songbai Chen , Qiyuan Pan , Jiliang Jing

We explore the electromagnetic fields around a quasi-Kerr compact object assuming it is immersed in an external asymptotically uniform magnetic field. Using the Wald method, components of the electromagnetic field in orthonormal basis have…

General Relativity and Quantum Cosmology · Physics 2019-05-09 Bakhtiyor Narzilloev , Ahmadjon Abdujabbarov , Cosimo Bambi , Bobomurat Ahmedov