Hall-Drift Induced Magnetic Field Instability in Neutron Stars

Details Hall-Drift Induced Magnetic Field Instability in Neutron Stars Hall-Drift Induced Magnetic Field Instability in Neutron Stars

Mar 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002phrvl..88j1103r&link_type=abstract

Physical Review Letters, vol. 88, Issue 10, id. 101103

Physics

36

Scientific paper

In the presence of a strong magnetic field and under conditions as realized in the crust and the superfluid core of neutron stars, the Hall drift dominates the field evolution. We show by a linear analysis that, for a sufficiently strong large-scale background field depending at least quadratically on position in a plane conducting slab, an instability occurs which rapidly generates small-scale fields. Their growth rates depend on the choice of the boundary conditions, increase with the background field strength, and may reach 103 times the Ohmic decay rate. The effect of that instability on the rotational and thermal evolution of neutron stars is discussed.

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