RDM-stars and galactic rotation curves

Nikitin, I V

doi:10.48550/arxiv.1903.09972

Cited by 2 publications

(9 citation statements)

References 31 publications

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“…In this case, the ratio of the contributions of the luminous and dark matter in R cut sphere is comparable with their cosmological ratio. This was shown by the calculation in [5], which can be easily reproduced here:…”

Section: Derivation Of Tully-fisher Relation In Rdm Modelsupporting

confidence: 64%

“…In work [5], the model of RDM-stars was used to describe the fine structure of galactic rotation curves. It was assumed that not only the central, but all black holes in the galaxy are the sources of dark matter flows.…”

Section: Combined Analysis Of Frbs and Rcs In Rdm Modelmentioning

confidence: 99%

“…Since for URC the experimental v(r) curves are normalized to values at the optical radius (r/R opt , v/v opt ), and in this work we are interested in absolute values, we concentrate on GRC, where such normalization is not performed. When analyzing the GRC in [5], three scenarios are used, that are distinguished by the coupling coefficients of dark matter with individual galactic structures: the central black hole, the inner bulge, the outer bulge and the disk. The contribution to the parameter defined above for the central black hole is given by the formula…”

Section: Combined Analysis Of Frbs and Rcs In Rdm Modelmentioning

confidence: 99%

“…Further, a distance R cut is introduced at which the RDM model is cut and joined with a uniform distribution of matter. The junction is done as follows, [5]. According to the GRC behavior in Fig.…”

Section: Derivation Of Tully-fisher Relation In Rdm Modelmentioning

confidence: 99%

“…Bursts (FRBs) with observable characteristics. In work [5] it was shown that the RDM model well describes the observed Rotation Curves (RCs) of spiral galaxies.…”

Section: Introductionmentioning

confidence: 99%

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RDM-stars and related topics

Nikitin¹

2019

Preprint

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In this paper, we will continue to study the model of black holes coupled to the radial flows of dark matter (RDM-stars). According to recent studies, this model well describes the experimental Rotation Curves (RCs) of spiral galaxies, also, RDM-stars can produce signals with the characteristics of Fast Radio Bursts (FRBs). In this paper, we will perform a combined analysis of experimental data on RCs and FRBs, which will allow to constrain tighter parameters of the model. We will also show that within the framework of the model, the Tully-Fisher relation with a slope of β = 3 − 4 can be obtained. Further, several particular solutions will be considered: tachyonic oven -a solution in which the incoming flow of tachyons turns into an outgoing flow of massive particles; shell condensate -a naked singularity of negative mass covered by a thin shell of positive mass, so that the Schwarzschild solution of negative mass inside is joined to one of positive mass outside; also, an RDM solution with a cosmological constant will be considered. Further, in the model under consideration, Penrose diagrams will be constructed, which share common features with Schwarzschild solutions of positive and negative mass, whose combination the model is. The mechanism of effective formation of negative masses in the model is discussed, which is activated when the density of the central core exceeds the Planck value, similarly to the previously studied quantum bounce effect.

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Section: Derivation Of Tully-fisher Relation In Rdm Modelsupporting

confidence: 64%

Section: Combined Analysis Of Frbs and Rcs In Rdm Modelmentioning

confidence: 99%

Section: Combined Analysis Of Frbs and Rcs In Rdm Modelmentioning

confidence: 99%

Section: Derivation Of Tully-fisher Relation In Rdm Modelmentioning

confidence: 99%

“…Bursts (FRBs) with observable characteristics. In work [5] it was shown that the RDM model well describes the observed Rotation Curves (RCs) of spiral galaxies.…”

Section: Introductionmentioning

confidence: 99%

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RDM-stars and related topics

Nikitin¹

2019

Preprint

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Quantum Gravity Wormholes and Topological Teleporter

Nikitin

2019

Preprint

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The question of a possibility of opening a wormhole due to the deformation of the equation of state of the matter caused by quantum gravity effects is considered. As a wormhole environment, the previously considered model of a galaxy with radial flows of dark matter is selected. The calculation shows, that for a wormhole solution in the framework of this model, after the nominal classical density exceeds a critical value in the Planck range, the components of the energy-momentum tensor become negative in a certain order. First, the mass density becomes negative, then the radial pressure, then the tangential pressure. In this case, at some point the flare-out conditions necessary and sufficient to open the wormhole are fulfilled. Calculations are made to open a wormhole in a model with parameters of the Milky Way galaxy. It is shown that the opening of the wormhole is accompanied by a separation of the bubble of space, completely detached from the wormhole and the outer space. In addition to this solution, a topologically dual one is found, looking like an instant swapping of two volumes in space, which can be interpreted as an event of teleportation.

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RDM-stars and galactic rotation curves

Cited by 2 publications

References 31 publications

RDM-stars and related topics

RDM-stars and related topics

Quantum Gravity Wormholes and Topological Teleporter

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