Magnetic field evolution timescales in superconducting neutron stars
arXiv:2010.07673 · doi:10.1093/mnras/staa3160
Abstract
The self-consistent approach to the magnetic field evolution in neutron star cores, developed recently, is generalised to the case of superfluid and superconducting neutron stars. Applying this approach to the cold matter of neutron star cores composed of neutrons, protons, electrons, and muons we find that, similarly to the case of normal matter, an arbitrary configuration of the magnetic field may result in generation of macroscopic particle velocities, strongly exceeding their diffusive (relative) velocities. This effect substantially accelerates evolution of the magnetic field in the stellar core. An hierarchy of timescales of such evolution at different stages of neutron star life is proposed and discussed. It is argued that the magnetic field in the core cannot be considered as frozen or vanishing and that its temporal evolution should affect the observational properties of neutron stars.
10 pages, 3 figures, accepted for publication in MNRAS
References in corpus (20)
- The ATNF Pulsar Catalogue
- Magnetic field dissipation in neutron star crusts: from magnetars to isolated neutron stars
- Magnetic, thermal and rotational evolution of isolated neutron stars
- Population synthesis of isolated Neutron Stars with magneto--rotational evolution
- Magnetic, thermal and rotational evolution of isolated neutron stars
- Magnetic Field Evolution of Neutron Stars I: Basic formalism, numerical techniques, and first results
- Magnetic Field Evolution in Neutron Stars: One-Dimensional Multi-Fluid Model
- The relevance of ambipolar diffusion for neutron star evolution
- Instability of Magnetic Equilibria in Barotropic Stars
- Magnetic Axis Drift and Magnetic Spot Formation in Neutron Stars with Toroidal Fields
- Relativistic dynamics of superfluid-superconducting mixtures in the presence of topological defects and an electromagnetic field with application to neutron stars
- Microscopic Vortex Velocity in the Inner Crust and Outer Core of Neutron Stars
- Modified pulsar current analysis: probing magnetic field evolution
- On the magnetic field evolution timescale in superconducting neutron star cores
- Two-fluid simulations of the magnetic field evolution in neutron star cores in the weak-coupling regime
- Dissipative relativistic magnetohydrodynamics of a multicomponent mixture and its application to neutron stars
- Force on proton vortices in superfluid neutron stars
- Braking indices of young radio pulsars: theoretical perspective
- Nonaxisymmetric Hall instability: A key to understanding magnetars
- Magnetic-field evolution with large-scale velocity circulation in a neutron-star crust
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- Long-period Pulsars as Possible Outcomes of Supernova Fallback Accretion
- 3D Magneto-thermal Simulations of Tangled Crustal Magnetic Field in Central Compact Objects
- 3D evolution of neutron star magnetic-fields from a realistic core-collapse turbulent topology
- Fast cooling and internal heating in hyperon stars
- Multi-Messenger Constraints on Magnetic Fields in Merging Black Hole-Neutron Star Binaries
- Stability of axially symmetric magnetic fields in stars
- The impact of superconductivity and the Hall effect in models of magnetized neutron stars
- Thermal luminosity degeneracy of magnetized neutron stars with and without hyperon cores
- Diffusion in superfluid Fermi mixtures: General formalism
- Validating and improving two-fluid simulations of the magnetic field evolution in neutron star cores
- Signatures of magnetic flux expulsion from neutron star cores
- Neutron star heating vs. HST observations
- Dissipative superfluid relativistic magnetohydrodynamics of a multicomponent fluid: the combined effect of particle diffusion and vortices
- Magnetic field decay in young radio pulsars