https://doi.org/10.1140/epjc/s10052-024-13463-5
Regular Article - Theoretical Physics
QPOs from charged particles around magnetized black holes in braneworlds
1
Institute of Fundamental and Applied Research, National Research University TIIAME, Kori Niyoziy 39, 100000, Tashkent, Uzbekistan
2
University of Tashkent for Applied Sciences, Str. Gavhar 1, 100149, Tashkent, Uzbekistan
3
Urgench State University, Kh. Alimdjan Str. 14, 220100, Urgench, Uzbekistan
4
Tashkent State Technical University, 100095, Tashkent, Uzbekistan
5
Uzbek-Finnish Pedagogical Institute, Spitamen Shokh Str. 166, 140100, Samarkand, Uzbekistan
6
Department of Theoretical Physics, Samarkand State University, 140104, Samarkand, Uzbekistan
7
Ulugh Beg Astronomical Institute, Astronomy Str. 33, 100052, Tashkent, Uzbekistan
8
Shahrisabz State Pedagogical Institute, Shahrisabz Str. 10, 181301, Shahrisabz, Uzbekistan
Received:
16
August
2024
Accepted:
5
October
2024
Published online:
27
October
2024
Quasiperiodic oscillations (QPOs) are a powerful tool for testing gravity theories, probing gravitational and electromagnetic field properties, and obtaining constraints on the black hole and field parameters. This work considers charged particle dynamics near uniformly magnetized black holes in braneworlds. First, we obtain the solution of the Maxwell equation for magnetic fields and calculate the radial and angular magnetic field components. We derive and analyze the effective potential of charged particles for circular orbits and investigate the energy and angular momentum for the circular orbits. We also analyze the combined effects of magnetic interaction and braneworlds on the charged particles’ innermost stable circular orbits (ISCOs). We calculate the angular momentum of charged particles in Keplerian orbits in the presence of an external magnetic field and braneworlds. Also, we investigate frequencies of the particle oscillations along vertical and angular directions. We applied our studies on particle oscillations to the QPO studies in the relativistic precession model. Finally, we obtain constraints on magnetic interaction and braneworld parameters together with the black hole mass and QPO orbits using Monte Carlo Markov Chain (MCMC) simulation in the four-dimensional parameter space for the QPOs observed in the microquasars XTE J1550-564, GRO J1655-40 & GRS 1915-105, and at the center of galaxies M82 and Milky Way.
© The Author(s) 2024
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Funded by SCOAP3.
