Charged particle dynamics in parabolic magnetosphere around Schwarzschild black hole

@article{76801,
   author = {Kološ, Martin and Shahzadi, Misbah and Tursunov, Arman},
   article_location = {New York (USA)},
   article_number = {4},
   doi = {http://dx.doi.org/10.1140/epjc/s10052-023-11498-8},
   keywords = {magnetic-field structure;event horizon; oscillation;extraction;energy},
   language = {eng},
   issn = {1434-6044},
   journal = {European Physical Journal C},
   title = {Charged particle dynamics in parabolic magnetosphere around Schwarzschild black hole},
   url = {https://link.springer.com/article/10.1140/epjc/s10052-023-11498-8},
   volume = {83},
   year = {2023}
}

TY  - JOUR
ID  - 76801
AU  - Kološ, Martin - Shahzadi, Misbah - Tursunov, Arman
PY  - 2023
TI  - Charged particle dynamics in parabolic magnetosphere around Schwarzschild black hole
JF  - European Physical Journal C
VL  - 83
IS  - 4
SP  - "323-1"-"323-23"
EP  - "323-1"-"323-23"
PB  - SPRINGER
SN  - 14346044
KW  - magnetic-field structure;event horizon
KW  - oscillation;extraction;energy
UR  - https://link.springer.com/article/10.1140/epjc/s10052-023-11498-8
N2  - 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 parabolic magnetic field configuration around Schwarzschild black hole, since the paraboloidal shapes of magnetic field lines around black holes are well motivated by the numerical simulations and supported by observations of relativistic jets. Analysing the stability of bounded orbits and using the effective potential approach, we show the possibility of existence of stable circular off-equatorial orbits around the symmetry axis. We also show the influence of radiation reaction force on the dynamics of charged particles, in particular on the chaoticity of the motion and Poincare sections, oscillatory frequencies, and emitted electromagnetic spectrum. Applied to Keplerian accretion disks, we show that in parabolic magnetic field configuration, the thin accretion configurations can be either destroyed or transformed into a thick toroidal structure given the radiation reaction and electromagnetic-disk interactions included. Calculating the Fourier spectra for radiating charged particle trajectories, we find that the radiation reaction force does not affect the main frequency peaks, however, it lowers the higher harmonics making the spectrum more flat and diluted in high frequency range.
ER  - 

KOLOŠ, Martin, Misbah SHAHZADI a Arman TURSUNOV. Charged particle dynamics in parabolic magnetosphere around Schwarzschild black hole. \textit{European Physical Journal C}. New York (USA): SPRINGER, 2023, roč.~83, č.~4, s.~''323-1''-''323-23'', 23 s. ISSN~1434-6044. Dostupné z: https://dx.doi.org/10.1140/epjc/s10052-023-11498-8.