paper

Three-dimensional simulations of the magnetic stress in a neutron star crust

arXiv:1501.05149 · doi:10.1103/PhysRevLett.114.191101

Abstract

We present the first fully self-consistent three-dimensional model of a neutron star's magnetic field, generated by electric currents in the star's crust via the Hall effect. We find that the global-scale field converges to a Hall-attractor state, as seen in recent axisymmetric models, but that small-scale features in the magnetic field survive even on much longer timescales. These small-scale features propagate toward the dipole equator, where the crustal electric currents organize themselves into a strong equatorial jet. By calculating the distribution of magnetic stresses in the crust, we predict that neutron stars with fields stronger than G can still be subject to starquakes more than yr after their formation.

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