Formation of wormholes by dark matter in the galaxy Dragonfly 44

@article{Islam2018FormationOW,
  title={Formation of wormholes by dark matter in the galaxy Dragonfly 44},
  author={Sayeedul Islam and Farook Rahaman and Ali Ovgun and Mustafa Halilsoy},
  journal={Canadian Journal of Physics},
  year={2018}
}
Recently, the ultra-diffuse galaxy (UDG) Dragonfly 44 in the Coma Cluster was observed and observations of the rotational speed suggest that its mass is almost the same as the mass of the Milky Way... 
6 Citations

Possible formation of wormholes from dark matter in an isothermal galactic halo and void

It is well-known that traversable wormholes are valid solutions of the Einstein field equations, but these structures can only be maintained by violating the null energy condition. In this paper, we

Microscopic wormholes, extra-dimensions and cold dark matter from N = 2 maximal supergravity with Gauss–Bonnet corrections

In this paper, we have discussed a (1 + 9)-dimensional open cosmological model motivated from N = 2 maximal supergravity arguments characterized by the presence of a wormhole connected to the extra...

On the possibility of wormhole formation in the galactic halo due to dark matter Bose–Einstein condensates

This paper has found a new wormhole solution supported by BEC dark matter using the expressions for the density profile of the BEC and rotation velocity along with the Einstein field equations to calculate the wormhole red shift function as well as the shape function.

Traversable wormholes in the galactic halo with MOND and non-linear equation of state

The existence of traversable wormhole (TW) in the Einstein’s general theory of relativity is explored with density profile obtained from modified Newtonian dynamics (MOND) with or without a scalar

Phase space of static wormholes sustained by an isotropic perfect fluid

  • S. Fay
  • Physics
    General Relativity and Gravitation
  • 2019
A phase space is built that allows to study, classify and compare easily large classes of static spherically symmetric wormholes solutions, sustained by an isotropic perfect fluid in General

References

SHOWING 1-10 OF 35 REFERENCES

Possible existence of wormholes in the galactic halo region

Two observational results, the density profile from simulations performed in the $$\Lambda $$ΛCDM scenario and the observed flat galactic rotation curves, are taken as input with the aim of showing

A HIGH STELLAR VELOCITY DISPERSION AND ∼100 GLOBULAR CLUSTERS FOR THE ULTRA-DIFFUSE GALAXY DRAGONFLY 44

Recently a population of large, very low surface brightness, spheroidal galaxies was identified in the Coma cluster. The apparent survival of these ultra-diffuse galaxies (UDGs) in a rich cluster

The Structure of cold dark matter halos

High resolution N-body simulations show that the density profiles of dark matter halos formed in the standard CDM cosmogony can be fit accurately by scaling a simple “universal” profile. Regardless

Existence of traversable wormholes in the spherical stellar systems

Potentiality of the presence of traversable wormholes in the outer/inner regions of the halos of galaxies, situated on the Navarro-Frenk-White (NFW) density profile and Universal Rotation Curve (URC)

The Optical Properties of Gravitational Lens Galaxies as a Probe of Galaxy Structure and Evolution

We combine photometry and lens modeling to study the properties of 17 gravitational lens galaxies between z = 0.1 and ~1. Most of the lens galaxies are passively evolving early-type galaxies, with a

Rotating thin-shell wormhole

We construct a rotating thin-shell wormhole using a Myers-Perry black hole in five dimensions, using the Darmois-Israel junction conditions. The stability of the wormhole is analyzed under

Light deflection by charged wormholes in Einstein-Maxwell-dilaton theory

In this paper, we study the deflection of light by a class of charged wormholes within the context of the Einstein-Maxwell-dilaton theory. The primordial wormholes are predicted to exist in the early

Extended theories of gravity and their cosmological and astrophysical applications

Astrophysical observations are pointing out huge amounts of “dark matter” and “dark energy” needed to explain the observed large scale structure and cosmic dynamics. The emerging picture is a

Tunnelling of vector particles from Lorentzian wormholes in 3+1 dimensions

In this article, we consider the Hawking radiation (HR) of vector (massive spin-1) particles from the traversable Lorentzian wormholes (TLWH) in 3+1 dimensions. We start by providing the Proca