Origin of cosmic magnetic fields

Details Origin of cosmic magnetic fields Origin of cosmic magnetic fields

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979pepi...20..185a&link_type=abstract

(Topical Conference on Origins of Planetary Magnetism, Houston, Tex., Nov. 8-11, 1978.) Physics of the Earth and Planetary Inter

Physics

1

Cosmology, Dynamo Theory, Electric Current, Magnetic Field Configurations, Planetary Magnetic Fields, Stellar Magnetic Fields, Celestial Bodies, Cosmic Plasma, Electrodynamics, Interstellar Magnetic Fields, Magnetization, Magnetohydrodynamic Stability, Solar Magnetic Field

Scientific paper

Reasons for describing cosmic hydromagnetic phenomena by introducing electric currents are summarized demonstrating that change from the traditional magnetic field description to a current description provides new aspects of cosmic electrodynamics. It is shown that the kink-instability of electric currents is the basic physical phenomenon responsible for magnetic flux generation in cosmic physics. A model which starts with a poloidal magnetic field is discussed; differential motions change the field configuration so that kinetic energy is transferred into magnetic energy of induced toroidal fields; the currents associated with these become unstable when the toroidal energy exceeds the poloidal energy resulting in an amplification of the original poloidal field.

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