Alfvén Polar Oscillations of Relativistic Stars
arXiv:0902.1490 · doi:10.1111/j.1365-2966.2009.14631.x
Abstract
We study polar Alfvén oscillations of relativistic stars endowed with a strong global poloidal dipole magnetic field. Here we focus only on the axisymmetric oscillations which are studied by evolving numerically the two-dimensional perturbation equations. Our study shows that the spectrum of the polar Alfvén oscillations is discrete in contrast to the spectrum of axial Alfvén oscillations which is continuous. We also show that the typical fluid modes, such as the f and p modes, are not significantly affected by the presence of the strong magnetic field.
arXiv comment10 pages, 5 figures
References in corpus (18)
- Modelling magnetically deformed neutron stars
- Neutron Star Asteroseismology. Axial Crust Oscillations in the Cowling Approximation
- On the Stability of the Iterated Crank-Nicholson Method in Numerical Relativity
- Torsional Oscillations of Relativistic Stars with Dipole Magnetic Fields
- QPOs during magnetar flares are not driven by mechanical normal modes of the crust
- On the theory of magnetar QPOs
- Probing Strong-Field Scalar-Tensor Gravity with Gravitational Wave Asteroseismology
- Elastic or magnetic? A toy model for global magnetar oscillations with implications for QPOs during flares
- Alfvén QPOs in Magnetars
- Neutron star oscillations and QPOs during magnetar flares
- Relativistic models of magnetars: structure and deformations
- Oscillations of rapidly rotating relativistic stars
- Quasi-toroidal oscillations in rotating relativistic stars
- Search for gravitational wave radiation associated with the pulsating tail of the SGR 1806-20 hyperflare of 27 December 2004 using LIGO
- Constraints on the Magnetic Field Geometry of Magnetars
- Axisymmetric oscillations of magnetic neutron stars
- On the r-mode spectrum of relativistic stars
- Crustal Oscillations of Slowly Rotating Relativistic Stars
Cited by in corpus (44)
- Gravitational waves from neutron stars: Promises and challenges
- Signatures of hadron-quark mixed phase in gravitational waves
- Probing the Equation of State of Nuclear Matter via Neutron Star Asteroseismology
- Relativistic models of magnetars: Nonperturbative analytical approach
- Magnetars oscillations in the presence of a crust
- Effect of superfluidity on neutron star crustal oscillations
- Coupled polar-axial magnetar oscillations
- Alfven QPOs in magnetars in the anelastic approximation
- Possible Constraints on the Density Dependence of the Nuclear Symmetry Energy from Quasiperiodic Oscillations in Soft Gamma Repeaters
- On the Quasi-Periodic Oscillations of Magnetars
- Slowly Rotating Relativistic Stars in Scalar-Tensor Gravity
- On the excitation of f-modes and torsional modes by magnetar giant flares
- Oscillations and instabilities in neutron stars with poloidal magnetic fields
- Evidence for an abundant old population of Galactic ultra long period magnetars and implications for fast radio bursts
- Stratification, superfluidity and magnetar QPOs
- Possible identifications of newly observed magnetar quasi-periodic oscillations as crustal shear modes
- Constraints on the nuclear equation of state and the neutron star structure from crustal torsional oscillations
- Magnetar Oscillations II: spectral method
- Oscillations of rotating magnetised neutron stars with purely toroidal magnetic fields
- Scalar gravitational waves from relativistic stars in scalar-tensor gravity
- Precursor flares of short gamma-ray bursts from crust yielding due to tidal resonances in coalescing binaries of rotating, magnetized neutron stars
- Magnetar Asteroseismology with Long-Term Gravitational Waves
- Probing Tensor-Vector-Scalar Theory with Gravitational Wave Asteroseismology
- Structure, Deformations and Gravitational Wave Emission of Magnetars
- Shear oscillations in the hadron-quark mixed phase
- Massive Hybrid Quark Stars with Strong Magnetic Field
- Magnetar QPOs and neutron star crust elasticity
- Electromagnetic fields in the exterior of an oscillating relativistic star -- II. Electromagnetic damping
- Empirical formula of crustal torsional oscillations
- Slowly Rotating Relativistic Stars in Tensor-Vector-Scalar Theory
- Oscillations of Highly Magnetized Non-rotating Neutron Stars
- Electron screening effects on crustal torsional oscillations
- Magnetized relativistic stellar models in Eddington-inspired Born-Infeld gravity
- Toroidal oscillations of slowly rotating relativistic star in tensor-vector-scalar theory
- Torsional oscillations of neutron stars with highly tangled magnetic fields
- Torsional oscillations in tensor-vector-scalar theory
- Non-axisymmetric magnetic modes of neutron stars with purely poloidal magnetic fields
- Quark matter with strong magnetic field and possibility of the third family of compact stars
- Axisymmetric spheroidal modes of neutron stars magnetized with poloidal magnetic fields
- Turbulence in Magnetised Neutron Stars
- Non-axisymmetric low frequency oscillations of rotating and magnetized neutron stars
- Torsional oscillations of magnetized neutron stars: Impacts of Landau-Rabi quantization of electron motion
- Nonlinear coupling between magnetar QPOs
- The -mode frequencies in cold neutron stars and nuclear saturation parameters