A sheet-current approach to coronal-interplanetary modeling

Details A sheet-current approach to coronal-interplanetary modeling A sheet-current approach to coronal-interplanetary modeling

Oct 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977soph...54..419y&link_type=abstract

Solar Physics, vol. 54, Oct. 1977, p. 419-430.

Physics

19

Current Sheets, Interplanetary Space, Magnetic Field Configurations, Magnetohydrodynamics, Solar Corona, Solar Wind, Free Boundaries, Hydrodynamic Equations, Lines Of Force, Solar Wind Velocity

Scientific paper

The most pertinent effect of the currents in coronal-interplanetary space is their alteration of the magnetic topology to form configurations of open field lines. The important currents seem to be those in the neighborhoods of interfaces between closed and open field lines or between oppositely directed open field lines in the coronal helmet-streamer structures. Thus, coronal-interplanetary space may be regarded as being partitioned by current sheets into several piecewise current-free regions. These current sheets overlie the photospheric neutral lines, where the vertical component of the magnetic field reverses its polarity on the solar surface. But their locations and strengths are determined by force balance between the magnetic field and the gas pressure in coronal-interplanetary space. Since the pressure depends on the flow velocity of the solar wind and the solar-wind channels along magnetic flux tubes, there is a strong magnetohydrodynamic coupling between the magnetic field and the solar wind. The sheet-current approach presented seems to be a reasonable way to account for this complicated interaction.

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