A star harbouring a wormhole at its core

Journal Article · Fri Apr 01 00:00:00 EDT 2011 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2011/04/031· OSTI ID:22277854

Dzhunushaliev, Vladimir ^[1]; Folomeev, Vladimir ^[2]; Kleihaus, Burkhard; Kunz, Jutta ^[3]

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1. Institute for Basic Research, Eurasian National University, Astana, 010008 (Kazakhstan)
2. Institute of Physicotechnical Problems and Material Science of the NAS of the Kyrgyz Republic, 265 a, Chui Street, Bishkek, 720071 (Kyrgyzstan)
3. Institut für Physik, Universität Oldenburg, Postfach 2503 D-26111 Oldenburg (Germany)

We consider a configuration consisting of a wormhole filled by a perfect fluid. Such a model can be applied to describe stars as well as neutron stars with a nontrivial topology. The presence of a tunnel allows for motion of the fluid, including oscillations near the core of the system. Choosing the polytropic equation of state for the perfect fluid, we obtain static regular solutions. Based on these solutions, we consider small radial oscillations of the configuration and show that the solutions are stable with respect to linear perturbations in the external region.

• OSTI ID: 22277854
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2011, Issue 04; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ASTROPHYSICS
COSMOLOGY
DISTURBANCES
EQUATIONS OF STATE
IDEAL FLOW
MATHEMATICAL SOLUTIONS
NEUTRON STARS
OSCILLATIONS
TOPOLOGY