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Magnetohydrodynamic...
Magnetohydrodynamics of superfluid and superconducting neutron star cores
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Glampedakis, Kostas (author)
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Andersson, Nils (author)
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- Samuelsson, Lars, 1974- (author)
- Umeå universitet,Institutionen för fysik,Nordita, Roslagstullsbacken 23, SE-106 91 Stockholm, Sweden
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(creator_code:org_t)
- 2010-11-15
- 2011
- English.
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In: Monthly notices of the Royal Astronomical Society. - : Royal Astronomical Society. - 0035-8711 .- 1365-2966. ; 410:2, s. 805-829
- Related links:
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https://academic.oup...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Mature neutron stars are cold enough to contain a number of superfluid and superconducting components. These systems are distinguished by the presence of additional dynamical degrees of freedom associated with superfluidity. In order to consider models with mixtures of condensates, we need to develop a multifluid description that accounts for the presence of rotational neutron vortices and magnetic proton fluxtubes. We also need to model the forces that impede the motion of vortices and fluxtubes, and understand how these forces act on the condensates. This paper concerns the development of such a model for the outer core of a neutron star, where superfluid neutrons co-exist with a type II proton superconductor and an electron gas. We discuss the hydrodynamics of this system, focusing on the role of the entrainment effect, the magnetic field, the vortex/fluxtube tension and the dissipative mutual friction forces. Our final results can be directly applied to a number of interesting astrophysical scenarios, e.g. associated with neutron star oscillations or the evolution of the large-scale magnetic field.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- MHD
- stars
- magnetic field
- stars
- neutron
- Astronomy and astrophysics
- Astronomi och astrofysik
- fysik
- Physics
Publication and Content Type
- ref (subject category)
- art (subject category)
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