Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.204.1025b&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 204, Sept. 1983, p. 1025-1048. Research supported by th
Astronomy and Astrophysics
Astronomy
213
Neutron Stars, Stellar Evolution, Stellar Magnetic Fields, Temperature Effects, Degenerate Matter, Electric Fields, Magnetic Dipoles, Pulsars, Stellar Rotation, Stellar Structure, Thermal Instability, White Dwarf Stars, X Ray Sources
Scientific paper
The authors summarize and extend the analysis of thermoelectric phenomena in degenerate stars due to Urpin and Yakovlev (1980) and calculate necessary conditions for field generation. A linearized calculation of the growth of the field in the solid crust is given, which demonstrates that small seed fields can grow exponentially for sufficiently large heat fluxes. Non-linear growth of the field in the liquid is described. If the field strength can grow to ≡1011 G, the electron gyrofrequency will exceed the collision frequency and the field growth in the solid will enter the non-linear phase. The Hall effect will lead to rapid convection of magnetic flux and the creation of progressively larger scale structure, perhaps resulting in the establishment of an axisymmetric field geometry. In the absence of external heat sources, the interior of the star will cool and the field will decay. The authors outline some of the observational consequences of this theory for pulsars, binary X-ray sources, X- and γ-ray bursters and white dwarfs.
Applegate James H.
Blandford Roger. D.
Hernquist Lars
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