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Gravitational waves from color-magnetic “mountains” in neutron stars

Gravitational waves from color-magnetic “mountains” in neutron stars
Gravitational waves from color-magnetic “mountains” in neutron stars
Neutron stars may harbor the true ground state of matter in the form of strange quark matter. If present, this type of matter is expected to be a color superconductor, a consequence of quark pairing with respect to the color and flavor degrees of freedom. The stellar magnetic field threading the quark core becomes a color-magnetic admixture and, in the event that superconductivity is of type II, leads to the formation of color-magnetic vortices. In this Letter, we show that the volume-averaged color-magnetic vortex tension force should naturally lead to a significant degree of nonaxisymmetry in systems such as radio pulsars. We show that gravitational radiation from such color-magnetic “mountains” in young pulsars, such as the Crab and Vela, could be observable by the future Einstein Telescope, thus, becoming a probe of paired quark matter in neutron stars. The detectability threshold can be pushed up toward the sensitivity level of Advanced LIGO if we invoke an interior magnetic field about a factor ten stronger than the surface polar field.
1-5
Glampedakis, K.
bece2036-f721-468e-9cd2-cf4324ff2deb
Jones, D.I.
b8f3e32c-d537-445a-a1e4-7436f472e160
Samuelsson, L.
972a981e-08d5-4c5e-a462-fa36c0af9faa
Glampedakis, K.
bece2036-f721-468e-9cd2-cf4324ff2deb
Jones, D.I.
b8f3e32c-d537-445a-a1e4-7436f472e160
Samuelsson, L.
972a981e-08d5-4c5e-a462-fa36c0af9faa

Glampedakis, K., Jones, D.I. and Samuelsson, L. (2012) Gravitational waves from color-magnetic “mountains” in neutron stars. Physical Review Letters, 109 (81103), 1-5. (doi:10.1103/PhysRevLett.109.081103).

Record type: Article

Abstract

Neutron stars may harbor the true ground state of matter in the form of strange quark matter. If present, this type of matter is expected to be a color superconductor, a consequence of quark pairing with respect to the color and flavor degrees of freedom. The stellar magnetic field threading the quark core becomes a color-magnetic admixture and, in the event that superconductivity is of type II, leads to the formation of color-magnetic vortices. In this Letter, we show that the volume-averaged color-magnetic vortex tension force should naturally lead to a significant degree of nonaxisymmetry in systems such as radio pulsars. We show that gravitational radiation from such color-magnetic “mountains” in young pulsars, such as the Crab and Vela, could be observable by the future Einstein Telescope, thus, becoming a probe of paired quark matter in neutron stars. The detectability threshold can be pushed up toward the sensitivity level of Advanced LIGO if we invoke an interior magnetic field about a factor ten stronger than the surface polar field.

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PhysRevLett.109.081103 - Other
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Published date: 22 August 2012
Organisations: Applied Mathematics

Identifiers

Local EPrints ID: 404334
URI: http://eprints.soton.ac.uk/id/eprint/404334
PURE UUID: 28a77b75-86c2-4fb9-873f-85a2fd1e0aeb
ORCID for D.I. Jones: ORCID iD orcid.org/0000-0002-0117-7567

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Date deposited: 05 Jan 2017 16:47
Last modified: 16 Mar 2024 03:06

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Contributors

Author: K. Glampedakis
Author: D.I. Jones ORCID iD
Author: L. Samuelsson

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