The University of Southampton
University of Southampton Institutional Repository

Do superfluid instabilities prevent neutron star precession?

Glampedakis, K., Andersson, N. and Jones, D.I. (2009) Do superfluid instabilities prevent neutron star precession? Monthly Notices of the Royal Astronomical Society, 394, (4), pp. 1908-1924. (doi:10.1111/j.1365-2966.2008.13995.x).

Record type: Article

Abstract

We discuss short wavelength (inertial wave) instabilities present in the standard twofluid neutron star model when there is sufficient relative flow along the superfluid neutron vortex array. We demonstrate that these instabilities may be triggered in
precessing neutron stars, since the angular velocity vectors of the neutron and proton fluids are misaligned during precession. The presence of such an instability would render the standard, solid body rotation, model for free precession inconsistent. Our
results suggest that the standard (Eulerian) slow precession that results for weak drag between the vortices and the charged fluid (protons and electrons) is not seriously constrained by the existence of the instability. In contrast, the fast precession, which
results when vortices are strongly coupled to the charged component, is generally unstable. This implies that fast precession may not be realised in astrophysical systems.

Full text not available from this repository.

More information

Published date: April 2009
Keywords: dense matter, instabilities, stellar dynamics, stars: neutron, stars: oscillations, pulsars: general

Identifiers

Local EPrints ID: 54973
URI: http://eprints.soton.ac.uk/id/eprint/54973
ISSN: 0035-8711
PURE UUID: 4facf088-0d2f-406b-98af-446ad985c4cc

Catalogue record

Date deposited: 04 Aug 2008
Last modified: 17 Jul 2017 14:34

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×