Diffusive hydromagnetic flow in the vicinity of a neutral point

Details Diffusive hydromagnetic flow in the vicinity of a neutral point Diffusive hydromagnetic flow in the vicinity of a neutral point

Aug 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...207..837y&link_type=abstract

Astrophysical Journal, vol. 207, Aug. 1, 1976, pt. 1, p. 837-847.

Astronomy and Astrophysics

Astrophysics

6

Energy Conversion, Magnetic Fields, Magnetohydrodynamic Flow, Solar Magnetic Field, Sunspots, Electrical Resistivity, Kinetic Energy, Magnetic Storage, Steady State, Thermal Energy

Scientific paper

In the hydromagnetic interactions of magnetic merging, the electrical resistivity determines the time scale for the temporal approach toward a steady state and the length scale for the dynamical balance in a steady state. These intrinsic scales are different from those externally identifiable scales. In a steady state, conversion of magnetic energy into kinetic and thermal energies requires the upstream Alfven number to be less than unity. Solutions in the vicinity of a neutral point show that the use of Ohm's law with a simple resistivity is appropriate in the modeling of field-line reconnection.

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