Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012hell.conf...25g&link_type=abstract
10th Hellenic Astronomical Conference, Proceedings of the conference held at Ioannina, Greece, 5-8 September 2011. Edited by Io
Astronomy and Astrophysics
Astronomy
Scientific paper
We consider the Hall dynamics of the magnetic fields in the electron plasma of solid neutron star crusts. Stationary configurations satisfy a Grad-Shafranov type equation for magnetic flux surfaces, where the poloidal electrical current is a function of magnetic flux. The non-vanishing Lorentz force is balanced by gravity, pressure and tensile stresses. We present the general separable solution for the linear approximation. We investigate their stability and we find that although purely poloidal magnetic field configuration is stable to internal modes it is not if the perturbation does not vanish on the boundaries and energy is exchanged between the crust a nd the magnetosphere.
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