J
2023
Charged particles motion and quasiperiodic oscillation in Simpson-Visser spacetime in the presence of external magnetic fields
VRBA, Jaroslav, Javlon RAYIMBAEV, Zdeněk STUCHLÍK and Bobomurat AHMEDOV
Basic information
Original name
Charged particles motion and quasiperiodic oscillation in Simpson-Visser spacetime in the presence of external magnetic fields
Authors
VRBA, Jaroslav (203 Czech Republic, belonging to the institution), Javlon RAYIMBAEV (860 Uzbekistan),
Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution) and Bobomurat AHMEDOV (860 Uzbekistan)
Edition
European Physical Journal C, New York (USA), SPRINGER, 2023, 1434-6044
Other information
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
RIV identification code
RIV/47813059:19630/23:A0000315
Organization unit
Institute of physics in Opava
Keywords in English
regular black-holes;X-rays binaries;mass;signature;spin
Tags
International impact, Reviewed
V originále
The present work is devoted to the study of the dynamics of charged particles around Simpson-Visser black holes (with the length parameter l <= 2) and wormholes (l > 2) immersed in an external asymptotically uniform magnetic field. To do this, first, we solve the Maxwell equation for 4-potentials of the electromagnetic field and show that the difference between the numerical solution and Wald's solution is small enough to neglect it, which may allow us to use the solution obtained by Wald. We also study fundamental frequencies of in the vertical and radial oscillations of charged particles around circular stable orbits around the magnetized black hole. The effects of the magnetic interaction and length parameters on the fundamental frequencies. We investigate the quasiperiodic oscillations (QPOs) around the black hole in relativistic precession and epicyclic resonance models. It is also shown that the combined effects of magnetic interaction for negatively charged particles and length parameters can mimic the spacetime effects of the Schwarzschild black hole compensating for their effects, as well as the spin of rotating Kerr black holes. The distance between an orbit where a QPO is generated with the ratio of upper and lower frequencies 3: 2 and innermost stable circular orbits is also studied. It is found that the QPO orbits are very close to ISCO in the RP model at l < 2. This implies that the obtained result helps to determine the ISCO around black holes. We also study the applications of observed-QPOs around stellar-mass black holes in microquasars and supermassive black holes.
Displayed: 29/12/2024 12:41