2011

Non-axisymmetric instabilities of neutron star with toroidal magnetic fields

Kiuchi, Kenta, Yoshida, Shijun, Shibata, Masaru

Understand

The aim of this paper is to clarify the stabilities of neutron stars with strong toroidal magnetic fields against non-axisymmetric perturbation.

  • The motivation comes from the fact that super magnetized neutron stars of $\sim 10^{15}$G, magnetars, and magnetized proto-neutron stars born after the magnetically-driven supernovae are likely to have such strong toroidal magnetic fields.
  • Long-term, three-dimensional general relativistic magneto-hydrodynamic simulations are performed, preparing isentropic neutron stars with toroidal magnetic fields in equilibrium as initial conditions.
  • To explore the effects of rotations on the stability, simulations are done for both non-rotating and rigidly rotating models.

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