Isofrequency pairing of spinning particles in Schwarzschild–de Sitter spacetime

Kunst, Daniela; Perlick, Volker; Lämmerzahl, Cláus

doi:10.1103/physrevd.92.024029

Cited by 12 publications

(20 citation statements)

References 47 publications

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“…The physical effects of the spingravity interaction in Kerr's spacetime are presented in [14][15][16][17][18] (more full bibliography can be found in [19,20] and in other papers). In some recent publications the MP equations are studied for the Schwarzschild-de Sitter spacetime [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Highly relativistic spin-gravity- Λ coupling

2017

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The effects of highly relativistic spin-gravity coupling in the Schwarzschild-de Sitter background which follow from the Mathisson-Papapetrou equations are investigated. The dependence of gravitoelectric and gravitomagnetic components of gravitational field on the velocity of an observer which is moving in Schwarzschild-de Sitter's background is estimated. The action of gravitomagnetic components on a fast moving spinning particle is considered. Different cases of the highly relativistic circular orbits of a spinning particle which essentially differ from the corresponding geodesic orbits are described. PACS numbers: 04.20.-q, 95.30.Sf I.

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Section: Introductionmentioning

confidence: 99%

Highly relativistic spin-gravity- Λ coupling

2017

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“…Note that the existence of the separatrix plays an important role for occurrence of these dual orbits in this isofrequency scenario. Considering the singular curve and the circular orbit duals in the particular region of the gravitational object is particularly important, and the COD can also play an important role due to the fact that as a boundary region allowing to keep pairs of isofrequency orbits that exist in this region [24][25][26].…”

Section: Isofrequency Pairing Orbits In Black String Spectime Geometrymentioning

confidence: 99%

“…It turns out that the surface of allowed region where isofrequency pairing orbits occur decreases as a consequence of the presence of the external magnetic field. It was later extended to the spinning particles in the Schwarzschild-de Sitter spacetime [26]. In the present paper, we consider isofrequency pairing of geodesic orbits around black string spacetime geometry, as shown by the line element in [29].…”

Section: Introductionmentioning

confidence: 99%

“…In this framework, the motion of test particles in the strong gravitational field regime has been a productive field of study for several years [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. On the other hand, there is an extensive body of work devoted to understand the nature of radiative inspirals around black holes as a source of gravitational waves and binary systems [20][21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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Geodesic Circular Orbits Sharing the Same Orbital Frequencies in the Black String Spacetime

Shaymatov

Atamurotov

2021

Galaxies

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We consider isofrequency pairing of geodesic orbits that share the same three orbital frequencies associated with Ωr^, Ωφ^, and Ωω^ in a particular region of parameter space around black string spacetime geometry. We study the effect of a compact extra spatial dimension on the isofrequency pairing of geodesic orbits and show that such orbits would occur in the allowed region when particles move along the black string. We find that the presence of the compact extra dimension leads to an increase in the number of the isofrequency pairing of geodesic orbits. Interestingly we also find that isofrequency pairing of geodesic orbits in the region of parameter space cannot be realized beyond the critical value Jcr≈0.096 of the conserved quantity of the motion arising from the compact extra spatial dimension.

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“…The motion of spinning particles in the Schwarzschild-de Sitter spacetime has been studied before in [48,49]. Here we will present a more detailed analysis, to gain some general insight on different non asymptotically flat spacetimes.…”

Section: Spinning Particle In the Schwarzschild-de Sitter Spacetimementioning

confidence: 99%

Motion of spinning particles in non asymptotically flat spacetimes

et al. 2020

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The assumption of asymptotic flatness for isolated astrophysical bodies may be considered an approximation when one considers a cosmological context where a cosmological constant or vacuum energy is present. In this framework we study the motion of spinning particles in static, spherically symmetric and asymptotically non-flat spacetimes with repulsive cosmological vacuum energy and quintessential field. Due to the combined effects of gravitational attraction and cosmological repulsion, the region where stable circular orbits are allowed is restricted by an innermost and an outermost stable circular orbits. We show that taking into account the spin of test particles may enlarge or shrink the region of allowed stable circular orbits depending on whether the spin is co-rotating or counter-rotating with the angular momentum of the particles.

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Isofrequency pairing of spinning particles in Schwarzschild–de Sitter spacetime

Cited by 12 publications

References 47 publications

Highly relativistic spin-gravity- Λ coupling

Highly relativistic spin-gravity- Λ coupling

Geodesic Circular Orbits Sharing the Same Orbital Frequencies in the Black String Spacetime

Motion of spinning particles in non asymptotically flat spacetimes

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