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Magnetic and thermodynamic structure of the solar corona during sunspot minimumA model of the solar corona during sunspot minimum was constructed. It was suggested that pole-equator asymmetry is caused by interaction of global azimuthal electric currents in the corona and potential magnetic fields originating below the corona. The problem was reduced to a nonlinear ordinary differential equation for a structural function. Taking the difference in electron density between the equatorial plane and the polar direction from observations, the basic equation was solved and the global electric current distribution around the Sun along with the magnetic and thermodynamic structures of the solar corona was derived. The asymmetry between the two hemispheres, which can be due to the magnetic quadrupole, is considered in detail. It is shown that an additional quadrupole term in the magnetic field representation affects the position of polar coronal hole boundaries differently in the two hemispheres. As a result, the outflow from the two polar regions is found to be different.
Document ID
19850021561
Document Type
Conference Paper
Authors
Osherovich, V. A. (Colorado Univ. Boulder, CO, United States)
Tzur, I. (National Center for Atmospheric Research St. Louis, United States)
Gliner, E. B. (Washington Univ.)
Date Acquired
August 12, 2013
Publication Date
May 1, 1985
Publication Information
Publication: NASA. Marshall Space Flight Center Meas. of Solar Vector Magnetic Fields
Subject Category
SOLAR PHYSICS
Funding Number(s)
CONTRACT_GRANT: NASA ORDER W-15028
CONTRACT_GRANT: NSF PHY-83-13545
CONTRACT_GRANT: NSF PHY-81-15800
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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