Core-crust interaction of toroidal modes of magnetized neutron stars

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We calculate axisymmetric toroidal modes of magnetized neutron stars with a solid crust. We assume the interior of the star is threaded by a poloidal magnetic field that is continuous at the surface with the outside dipole field whose strength Bp at the magnetic pole is Bp ∼ 10 16G. Since separation of variables is not possible for oscillations of magnetized stars, to represent the angular dependence of the oscillation modes we employ finite series expansions in terms of spherical harmonic functions. For Bp ∼ 1016G, we find isolated sequences of low radial order toroidal modes, whose oscillation frequency slowly increases as the number of radial nodes of the eigenfunction increases. The frequency spectrum of toroidal modes for Bp ∼ 1016G is largely different from that of crustal toroidal modes of the non-magnetized model.

Original languageEnglish
Title of host publicationUnsolved Problems in Stellar Physics - A Conference in Honour of Douglas Gough
Pages263-270
Number of pages8
DOIs
Publication statusPublished - 2007 Dec 1
EventConference on Unsolved Problems in Stellar Physics - Cambridge, United Kingdom
Duration: 2007 Jul 22007 Jul 6

Publication series

NameAIP Conference Proceedings
Volume948
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherConference on Unsolved Problems in Stellar Physics
CountryUnited Kingdom
CityCambridge
Period07/7/207/7/6

Keywords

  • Instabilities
  • Stars: magnetic fields
  • Stars: neutron
  • Stars: oscillations

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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