Weighted current sheets supported in normal and inverse configurations - A model for prominence observations

Details Weighted current sheets supported in normal and inverse configurations - A model for prominence observations Weighted current sheets supported in normal and inverse configurations - A model for prominence observations

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...387..394d&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 387, March 1, 1992, p. 394-402. Research supported by Observatoire de Paris

Astronomy and Astrophysics

Astrophysics

11

Current Sheets, Magnetic Field Configurations, Solar Magnetic Field, Solar Prominences, Boundary Conditions, Photosphere, Solar Atmosphere, Solar Corona

Scientific paper

A technique which incorporates both photospheric and prominence magnetic field observations is used to analyze the magnetic support of solar prominences in two dimensions. The prominence is modeled by a mass-loaded current sheet which is supported against gravity by magnetic fields from a bipolar source in the photosphere and a massless line current in the corona. It is found that prominence support can be achieved in three different kinds of configurations: an arcade topology with a normal polarity; a helical topology with a normal polarity; and a helical topology with an inverse polarity. In all cases the important parameter is the variation of the horizontal component of the prominence field with height. Adding a line current external to the prominence eliminates the nonsupport problem which plagues virtually all previous prominence models with inverse polarity.

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