Possible Wormhole Candidates in Active Galactic Nuclei

Piotrovich, M. Yu.; Krasnikov, S.; Buliga, S. D.; Natsvlishvili, T. M.

doi:10.3390/universe6080120

Cited by 6 publications

(6 citation statements)

References 69 publications

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“…Previously, we considered the possible accretion of matter into a wormhole [55,56]. Specifically, we studied the case where accretion into a traversable wormhole occurs from both sides, each of which is located at the center of the active galactic nucleus.…”

Section: Our Specific Approachmentioning

confidence: 99%

Search for Wormhole Candidates: Accreting Wormholes with Monopole Magnetic Fields

Piotrovich,

Krasnikov,

Buliga

et al. 2024

Universe

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The existence of even the simplest magnetized wormholes may lead to observable consequences. In the case where both the wormhole and the magnetic field around its mouths are static and spherically symmetric, and gas in the region near the wormhole falls radially into it, the former’s spectrum contains bright cyclotron or synchrotron lines due to the interaction of charged plasma particles with the magnetic field. At the same time, due to spherical symmetry, the radiation is non-polarized. The emission of this just-described exotic type (non-thermal, but non-polarized) may be a wormhole signature. Also, in this scenario, the formation of an accretion disk is still quite possible at some distance from the wormhole, but a monopole magnetic field could complicate this process and lead to the emergence of asymmetrical and one-sided relativistic jets.

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Section: Our Specific Approachmentioning

confidence: 99%

Search for Wormhole Candidates: Accreting Wormholes with Monopole Magnetic Fields

Piotrovich,

Krasnikov,

Buliga

et al. 2024

Universe

Self Cite

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show abstract

“…In [14] ways of actually observing wormholes using astrophysical observations is discussed. Some recent articles discusses possible detection of wormholes in the active galactic nuclei [15] and in the bulge of the milky way galaxy [16]. Recently traversable wormholes were constructed in Einstein-Dirac-Maxwell theory without exotic matter [17].…”

Section: Introductionmentioning

confidence: 99%

Complexity factor parameterization for traversable wormholes

Bhattacharya

Nalui

2023

Journal of Mathematical Physics

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It is known that static traversable wormholes in Einstein gravity are supported by matter that violates null energy conditions (NEC). Essentially, such wormholes will be characterized by a central throat with anisotropic matter lining the throat that violates NEC. This, in turn, provides viable geometry for the wormhole to sustain. In 2018, Herrera [Phys. Rev. D 97, 044010 (2018)] introduced a new classification for spherically symmetric bodies called “complexity factor.” It was proposed that a spherically symmetric non-trivial geometry can be classified as complex or non-complex based on the nature of the inhomogeneity and anisotropy of the stress–energy tensors with only homogeneous and isotropic matter distribution leading to null complexity. Mathematically, there was also another way of obtaining zero complexity geometry. In this context, since static traversable wormholes, by default, are characterized by anisotropic and inhomogeneous matter stress tensors, the question we answer is whether it is possible to obtain zero complexity class of wormholes supported by exotic matter.

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“…How do these exotic objects compare to their GR black hole counterparts and how can we tell them apart (see for example [18][19][20][21][22][23])? For example, the hypothesis that Active Galactic Nuclei (AGN's) are not supermassive black holes but rather throats of macroscopic wormholes has been considered (see [24,25] and references within). Furthermore, theoretical work (see e.g.…”

Section: Introductionmentioning

confidence: 99%

Traversable wormholes in beyond Horndeski theories

Bakopoulos

Charmousis

Kanti

2022

J. Cosmol. Astropart. Phys.

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We construct a large class of explicit, asymptotically flat and regular wormhole solutions in higher order scalar tensor theories. The solutions are vacuum solutions of scalar tensor theory and no matter (exotic or regular) is introduced in order to support them. They are constructed via a general disformal transformation of a seed black hole solution. The seed solutions belong to a particular Horndeski theory which requires the presence of all extended Galileons and has a higher dimensional Lovelock origin. As a result, the resulting wormholes are always solutions of general beyond Horndeski theory. The particular class of wormholes we study are parametrised by their ADM mass and two coupling constants of the theory, one related to their higher dimensional Lovelock origin and one to the disformal transformation itself. The latter of the coupling constants affects the throat size of the wormhole solutions, thus giving them a compact or non-compact nature, as well as their properties.

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Possible Wormhole Candidates in Active Galactic Nuclei

Cited by 6 publications

References 69 publications

Search for Wormhole Candidates: Accreting Wormholes with Monopole Magnetic Fields

Search for Wormhole Candidates: Accreting Wormholes with Monopole Magnetic Fields

Complexity factor parameterization for traversable wormholes

Traversable wormholes in beyond Horndeski theories

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