Circulation of Matter and Evolution of the Internal Magnetic Field in Neutron Stars

Details Circulation of Matter and Evolution of the Internal Magnetic Field in Neutron Stars Circulation of Matter and Evolution of the Internal Magnetic Field in Neutron Stars

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.267.1000u&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 267, NO. 4/APR15, P.1000, 1994

Astronomy and Astrophysics

Astronomy

7

Mhd - Stars: Interiors - Stars: Magnetic Fields - Stars: Neutron

Scientific paper

Neutron stars may be in hydrostatic equilibrium only for very particular magnetic configurations with conservative magnetohydrodynamic forces. We consider the magnetohydrodynamic evolution of a neutron star with a non-zero external dipole field component. The ohmic dissipation should slightly change this equilibrium distribution of the currents, producing a slow circulation of matter which tends to maintain the magnetic configuration close to an equilibrium one. The evolution of a strong magnetic field (B≃1012-1013 G) under the influence of both ohmic dissipation and circulation is analysed in detail. The resulting field decay turns out to be crucially dependent on the thermal history of the neutron star. The time-scale of decay in the core may be rather short, particularly for old neutron stars with low surface temperatures Ts. For instance, this time-scale may be of the order of the order of ˜106-107 yr for Ts ˜5 × 105-106 K. The circulation accompanying field decay in the core is, in some aspects, like the classical meridional circulation in rotating stars. For example, the `magnetic' circulation can partially mix the core matter. The velocity of circulation decreases with the age of the neutron star as a result of the decay of the magnetic field.

Affiliated with

Also associated with

No associations

Rating

Circulation of Matter and Evolution of the Internal Magnetic Field in Neutron Stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Circulation of Matter and Evolution of the Internal Magnetic Field in Neutron Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circulation of Matter and Evolution of the Internal Magnetic Field in Neutron Stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1260370