SIMBAD references

2002A&A...392.1015G - Astronomy and Astrophysics, volume 392, 1015-1024 (2002/9-4)

Non-linear magnetic field decay in neutron stars. Theory and observations.

GEPPERT U. and RHEINHARDT M.

Abstract (from CDS):

There exists both theoretical and observational evidence that the magnetic field decay in neutron stars may proceed in a pronounced non-linear way during a certain episode of the neutron star's life. In the presence of a strong magnetic field the Hall-drift dominates the field evolution in the crust and/or the superfluid core of neutron stars. Analysing observations of P and {dot}(P) for sufficiently old isolated pulsars we gain strong hints for a significantly non-linear magnetic field decay. Under certain conditions with respect to the geometry and strength of a large-scale magnetic background field an instability is shown to occur which rapidly raises small-scale magnetic field modes. Their growth rates increase with the background field strength and may reach ∼104 times the ohmic decay rate. Consequences for the rotational and thermal evolution as well as for the cracking of the crust of neutron stars are discussed.

Abstract Copyright:

Journal keyword(s): stars: neutron - stars: magnetic fields - stars: evolution - stars: pulsars: general

Simbad objects: 16

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