An MHD instability in compact fluid objects

Details An MHD instability in compact fluid objects An MHD instability in compact fluid objects

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...254..683e&link_type=abstract

Astrophysical Journal, Part 1, vol. 254, Mar. 15, 1982, p. 683-687.

Astronomy and Astrophysics

Astrophysics

6

Magnetic Field Configurations, Magnetic Stars, Magnetohydrodynamic Stability, Poloidal Flux, Stellar Magnetic Fields, White Dwarf Stars, Magnetic Charge Density, Magnetic Dipoles, Neutron Stars, Stellar Evolution

Scientific paper

It is proved that spherical and nearly spherical magnetized fluids that contain purely poloidal fields having a nonzero vacuum component are in general unstable to MHD motions, as conjectured by Flowers and Ruderman. The exact growth rate is calculated for a simple geometry. It is suggested that the instability may occur in magnetic white dwarfs, with observable consequences.

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