Gravitoelectromagnetism: A Brief Review

Mashhoon, Bahram

doi:10.48550/arxiv.gr-qc/0311030

Cited by 2 publications

(2 citation statements)

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“…To determine the gravitational field of DM halo we employ the well-known gravitoelectromagnetism (GEM) approach [29] which was previously applied to galactic structures in [25,27,28]. According to the GEM formalism, in the case of a test particle (which is luminous matter in our case) moving much slower than the speed of light c, it is convenient to represent the spacetime metric in the form…”

Section: B Gravitoelectromagnetic Approachmentioning

confidence: 99%

“…The dominant effect of the vortex existence is due to the different core density distributions. Moreover, rotation flows produce v/c and higher order effects, which can be taken into account in the gravitoelectromagnetism approach discussed in [25][26][27][28][29] and used in our calculations below. The gravitoelectro-magnetic formulation of a slowly rotating, selfgravitating, and dilute BEC intended for astrophysical applications in the context of DM halos was discussed in [30].…”

Section: Introductionmentioning

confidence: 99%

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Dynamical galactic effects induced by stable vortex structure in bosonic dark matter

Korshynska¹,

Bidasyuk²,

V.³

et al. 2023

Preprint

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The nature of dark matter (DM) remains one of the unsolved mysteries of modern physics. An intriguing possibility is to assume that DM consists of ultralight bosonic particles in the Bose-Einstein condensate (BEC) state. We study stationary DM structures by using the system of the Gross-Pitaevskii and Poisson equations, including the effective temperature effect with parameters chosen to describe the Milky Way galaxy. We have investigated DM structure with BEC core and isothermal envelope. We compare the spherically symmetric and vortex core states, which allows us to analyze the impact of the core vorticity on the halo density, velocity distribution, and, therefore, its gravitational field. Gravitational field calculation is done in the gravitoelectromagnetism approach to include the impact of the core rotation, which induces a gravimagnetic field. As result, the halo with a vortex core is characterized by smaller orbital velocity in the galactic disk region in comparison with the non-rotating halo. It is found that the core vorticity produces gravimagnetic perturbation of celestial body dynamics, which can modify the circular trajectories.

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Section: B Gravitoelectromagnetic Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamical galactic effects induced by stable vortex structure in bosonic dark matter

Korshynska¹,

Bidasyuk²,

V.³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

Dynamical galactic effects induced by solitonic vortex structure in bosonic dark matter

et al. 2023

View full text Add to dashboard Cite

The nature of dark matter (DM) remains one of the unsolved mysteries of modern physics. An intriguing possibility is to assume that DM consists of ultralight bosonic particles in the Bose–Einstein condensate (BEC) state. We study stationary DM structures by using the system of the Gross–Pitaevskii and Poisson equations, including the effective temperature effect with parameters chosen to describe the Milky Way galaxy. We have investigated DM structure with BEC core and isothermal envelope. We compare the spherically symmetric and vortex core states, which allows us to analyze the impact of the core vorticity on the halo density, velocity distribution, and, therefore, its gravitational field. Gravitational field calculation is done in the gravitoelectromagnetism approach to include the impact of the core rotation, which induces a gravimagnetic field. As a result, the halo with a vortex core is characterized by smaller orbital velocity in the galactic disk region in comparison with the non-rotating halo. It is found that the core vorticity produces gravimagnetic perturbation of celestial body dynamics, which can modify the circular trajectories.

show abstract

Gravitoelectromagnetism: A Brief Review

Cited by 2 publications

References 0 publications

Dynamical galactic effects induced by stable vortex structure in bosonic dark matter

Dynamical galactic effects induced by stable vortex structure in bosonic dark matter

Dynamical galactic effects induced by solitonic vortex structure in bosonic dark matter

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