https://doi.org/10.1140/epjc/s10052-025-15166-x
Regular Article - Theoretical Physics
Impact of nonlinear electrodynamics on particle motion around a charged black hole with matter coupling
1
Department of Mathematics, Riphah International University, Faisalabad Campus, 38000, Islamabad, Punjab, Pakistan
2
College of Electrical and Mechanical Engineering, National University of sciences and Technology, Islamabad, Pakistan
3
Department of Mathematics, School of Science, University of Management and Technology, 54000, Lahore, Pakistan
4
Research Center of Astrophysics and Cosmology, Khazar University, 41 Mehseti Street, 1096, Baku, Azerbaijan
5
Tashkent State Technical University, 100095, Tashkent, Uzbekistan
6
University of Tashkent for Applied Sciences, Str. Gavhar 1, 100149, Tashkent, Uzbekistan
7
National Research University TIIAME, Kori Niyoziy 39, 100000, Tashkent, Uzbekistan
8
School of Science, Walailak University, 80160, Nakhon Si Thammarat, Thailand
9
College of Graduate Studies, Walailak University, 80160, Nakhon Si Thammarat, Thailand
10
Urgench State University, Kh. Alimdjan str. 14, 220100, Urgench, Uzbekistan
11
Kimyo International University in Tashkent, Shota Rustaveli str. 156, 100121, Tashkent, Uzbekistan
a
phongpichit.ch@mail.wu.ac.th
Received:
1
July
2025
Accepted:
3
December
2025
Published online:
5
January
2026
We study the dynamics of particles near a charged back hole (BH) in the f(R, T) theory of gravity coupled with nonlinear electrodynamics and analyze how the parameters of the BH affect the motion of test particles. We discuss the stability of the circular orbits by employing the effective potential technique. We derive the mathematical expressions for the particle energy and its angular momentum as a function of the BH parameters and study them graphically. We also study the innermost stable circular orbits and the effective force acting on the test particles. The epicyclic oscillations of test particles are examined, and the analytical expressions for the radial frequency, the vertical frequency, and the orbital frequency are obtained. We also discuss the frequency of the periastron precession of particles. We show that the BH parameters have a significant impact on the particle dynamics. We observe that the effective potential increases with increasing charge and angular momentum, and the orbits are more unstable compared with the smaller values of these parameters: as the BH charge or the particle’s angular momentum increases, the particle experiences a greater effective force. However, it is not affected by the BH parameters a and b. We investigate the emission energy as a thermodynamic property of the BH and discuss the evaporation aspects of the BH.
© The Author(s) 2026
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