The magnetic field in the chromosphere-corona transition zone above a sunspot

Astronomy and Astrophysics – Astronomy

Scientific paper

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Chromosphere, Magnetic Measurement, Radio Astronomy, Solar Corona, Solar Magnetic Field, Sunspots, Brightness Temperature, Centimeter Waves, Magnetic Flux, Plasma Density, Solar Temperature, Spaceborne Astronomy, Zeeman Effect

Scientific paper

The Zeeman splitting of the C IV UV line is used as the basis of a comparison of the 2-4 cm wavelength measurements of a sunspot's magnetic field from the base of the corona, made with the RATAN-600 radio telescope, with Solar Maximum Mission satellite measurements of the same spot. The 2:1 disparity between radio and satellite measurement values probably reflects substantial irregularities in the temperature and density distribution above the spot, as well as the complex field structure at heights 2000 km above the photosphere.

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