Stability of the toroidal magnetic field in stellar radiation zones
arXiv:1110.3340 · doi:10.1088/0004-637X/747/2/137
Abstract
Understanding the stability of the magnetic field in radiation zones is of crucial importance for various processes in stellar interior like mixing, circulation and angular momentum transport. The stability properties of a star containing a prominent toroidal field in a radiation zone is investigated by means of a linear stability analysis in the Boussinesq approximation taking into account the effect of thermal conductivity. The growth rate of the instability is explicitly calculated and the effects of stable stratification and heat transport are discussed in detail. It is argued that the stabilizing influence of gravity can never entirely suppress the instability caused by electric currents in radiation zones although the stable stratification can significantly decrease the growth rate of instability
12 pages, 3 figures
References in corpus (5)
- On magnetic instabilities and dynamo action in stellar radiation zones
- Protoneutron star dynamos: pulsars, magnetars, and radio-silent X-ray emitting neutron stars
- Stability of Toroidal Magnetic Fields in Rotating Stellar Radiation Zones
- Stability of magnetic configurations containing the toroidal and axial fields
- Non-axisymmetric instability of axisymmetric magnetic fields
Cited by in corpus (13)
- Three-Dimensional Relativistic Magnetohydrodynamic Simulations of Current-Driven Instability. III. Rotating Relativistic Jets
- On the role of tachoclines in solar and stellar dynamos
- What sets the magnetic field strength and cycle period in solar-type stars?
- Breakdown of chiral symmetry during saturation of the Tayler instability
- Global simulations of Tayler instability in stellar interiors: The stabilizing effect of gravity
- Solar Dynamo and Toroidal Field Instabilities
- Rotational suppression of the Tayler instability in stellar radiation zones
- Baroclinic Instability in Stellar Radiation Zones
- Global simulations of Tayler instability in stellar interiors: a long-time multi-stage evolution of the magnetic field
- Stability of the toroidal magnetic field in rotating stars
- Gravity's role in taming the Tayler instability in red giant cores
- A possible origin of the Galactic Center magnetar SGR 1745-2900
- Global simulations of stellar dynamos