Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995azh....72..374u&link_type=abstract
Astronomicheskij Zhurnal, vol. 72, p. 374
Astronomy and Astrophysics
Astronomy
2
Neutron Stars, Neutrons, Superfluidity, Stellar Evolution, Stellar Magnetic Fields, Hall Effect, Stellar Models, Orthogonal Functions, Resistance Heating
Scientific paper
The evolution of the magnetic field in the core of a neutron star is investigated with allowance for the star's cooling. One of the possible models of pre-plasma with neutrons in a superfluid state is analyzed. Superfluidity in such a plasma results in the fact that even in a magnetized plasma, the magnetic field does not affect the orthogonal component of the electrical resistivity tensor. Nevertheless, the presence of a large Hall component leads to a strong drift of the magnetic field. For fields more than or equal to 10 exp 13 G, this drift may fundamentally change the field geometry and accelerate its dissipation. The characteristic time of the field decay is about 5 x 10 exp 7 yr. The Joule heating significantly slows down star cooling, especially at late evolutionary stages.
Shalybkov Dmitry A.
Urpin Vadim A.
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