Particle motion and electromagnetic fields of rotating compact gravitating objects with gravitomagnetic charge

Abdujabbarov, Ahmadjon; Ahmedov, Bobomurat; Kagramanova, Valeria

doi:10.1007/s10714-008-0635-3

Cited by 77 publications

(112 citation statements)

References 31 publications

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“…In fact, the geodesic equations have been investigated in the spacetimes with Taub-NUT charge in the works [13,14,15,16,17]. Especially in [13,14] dynamical symmetries of the geodesic motion in the spacetime with NUT parameter (which describes four dimensional Bogomol'nyi-Prasad-Sommerfield (BPS) monopoles and five dimensional Kaluza-Klein monopoles respectively) have been illustrated.…”

Section: Introductionmentioning

confidence: 99%

Motion of the charged test particles in Kerr-Newman-Taub-NUT spacetime and analytical solutions

2016

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In this work, we study the motion of charged test particles in KerrNewman-Taub-NUT spacetime. We analyze the angular and the radial parts of the orbit equations and examine the possible orbit types. We also investigate the spherical orbits and their stabilities. Furthermore, we obtain the analytical solutions of the equations of motion and express them in terms of Jacobian and Weierstrass elliptic functions. Finally, we discuss the observables of the bound motion and calculate the perihelion shift and Lense-Thirring effect for the bound orbits.

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Section: Introductionmentioning

confidence: 99%

Motion of the charged test particles in Kerr-Newman-Taub-NUT spacetime and analytical solutions

2016

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“…It was first shown by Zimmerman and Shahir (1989) for the spherical symmetric case (NUT spacetime) and later in the paper of Bini et al (2003) for the axial symmetric case (Kerr-Taub-NUT spacetime) that the orbits of the test particles are confined to a cone with the opening angle θ given by cos θ = 2El/L. It also follows that in this case the equations of motion on the cone depend on l only via l 2 (Bini et al 2003;Abdujabbarov et al 2008).…”

Section: Particle Capture Cross Sections For Black Hole With Gravitommentioning

confidence: 95%

“…This black hole is described by the spacetime metric (Newman et al 1963;Morozova et al 2008;Abdujabbarov et al 2008):…”

Section: Photon Motion Around Rotating Taub-nut Black Holesmentioning

confidence: 99%

“…It has been shown in the paper of Abdujabbarov et al (2008) that variables in the Hamilton-Jacobi equation for the particle motion around NUT black hole can be separated in the equatorial plane. In the space-time metric (1) we assume that the central object is non-rotating and particles are confined at the equatorial plane (a = 0, and θ = π/2).…”

Section: Particle Capture Cross Sections For Black Hole With Gravitommentioning

confidence: 99%

“…Aliev et al (2008) considered Kerr-Taub-NUT spacetime with Maxwell and dilation fields. In our preceding papers (Morozova et al 2008;Abdujabbarov et al 2008) we have studied the plasma magnetosphere around a rotating, magnetized neutron star and charged particle motion around compact objects immersed in external magnetic field in the presence of the NUT parameter. The Penrose process in the spacetime of rotating black hole with nonvanishing gravitomagnetic charge has been considered by Abdujabbarov et al (2011).…”

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Shadow of Kerr-Taub-NUT black hole

Abdujabbarov

Atamurotov

Küçükakça

et al. 2012

Astrophys Space Sci

201

130

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The shadow of a rotating black hole with nonvanishing gravitomagnetic charge has been studied. It was shown that in addition to the angular momentum of black hole the gravitomagnetic charge term deforms the shape of the black hole shadow. From the numerical results we have obtained that for a given value of the rotation parameter, the presence of a gravitomagnetic charge enlarges the shadow and reduces its deformation with respect to the spacetime without gravitomagnetic charge. Finally we have studied the capture cross section for massive particles by black hole with the nonvanishing gravitomagnetic charge.

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Orbital widening due to radiation reaction around a magnetized black hole

2018

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Radiation reaction acting on a charged particle moving at a stable circular orbit of a magnetized black hole (BH) can lead to the shift of the orbital radius outward from the BH. The effect causes an increase of the energy and angular momentum of the particle measured by an observer at rest at infinity. In this paper, we show that “widening” of such orbits is independent of the field configuration, but it appears only in the cases with the external Lorentz force acting outward from the BH. This condition corresponds to qLB > 0, where q and L are the charge and angular momentum of the particle, and B is intensity of the external magnetic field. As examples of the orbital widening, we consider two scenarios with an external homogeneous magnetic field and a magnetic dipole field generated by a current loop around a Schwarzschild BH. We show that the orbital widening is accompanied by quasi‐harmonic oscillations of the particle, which are considerably large in the magnetic dipole fields. We also estimate the timescales of orbital widening, from which it follows that the effect can be relevant in the vicinity of stellar‐mass BHs.

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Particle motion and electromagnetic fields of rotating compact gravitating objects with gravitomagnetic charge

Cited by 77 publications

References 31 publications

Motion of the charged test particles in Kerr-Newman-Taub-NUT spacetime and analytical solutions

Motion of the charged test particles in Kerr-Newman-Taub-NUT spacetime and analytical solutions

Shadow of Kerr-Taub-NUT black hole

Orbital widening due to radiation reaction around a magnetized black hole

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