MHD simulation of the three-dimensional structure of the heliospheric current sheet

Details MHD simulation of the three-dimensional structure of the heliospheric current sheet MHD simulation of the three-dimensional structure of the heliospheric current sheet

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...376..288i&link_type=abstract

Astronomy and Astrophysics, v.376, p.288-291 (2001)

Astronomy and Astrophysics

Astrophysics

5

Solar Wind, Sun: Magnetic Fields

Scientific paper

The existence of the radial component of the electric current flowing toward the Sun is revealed in numerical simulation. The total strength of the radial current is ~ 3x 109 A. The only way to fulfil the electric current continuity is to close the radial electric current by means of field- aligned currents at the polar region of the Sun. Thus, the surface density of the closure current flowing along the solar surface can be estimated as ~ 4 A/m, and the magnetic field produced by this current is B ~ 5x 10-6 T, i.e. several percent of the intrinsic magnetic field of the Sun. This seems to mean that any treatment of the solar magnetic field generation should take into account the heliospheric current circuit as well as the currents flowing inside the Sun.

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