Magnetohydrodynamic motions in untwisting magnetic tubes of the solar atmosphere

Details Magnetohydrodynamic motions in untwisting magnetic tubes of the solar atmosphere Magnetohydrodynamic motions in untwisting magnetic tubes of the solar atmosphere

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983azh....60..709t&link_type=abstract

(Astronomicheskii Zhurnal, vol. 60, July-Aug. 1983, p. 709-716) Soviet Astronomy (ISSN 0038-5301), vol. 27, July-Aug. 1983, p. 4

Astronomy and Astrophysics

Astronomy

Magnetic Flux, Magnetohydrodynamic Flow, Plasma Cylinders, Solar Atmosphere, Chromosphere, Energy Transfer, Field Strength, Magnetic Field Configurations, Photosphere, Plasma Dynamics

Scientific paper

A 1D numerical model of the untwisting of a stable twisted vertical cylindrical solar-atmosphere magnetic tube is developed, and results are presented for various values of the longitudinal field strength, the degree of twisting, and the tube-base untwisting rate. The photosphere-to-chromosphere plasma ejection for low or high degrees of twisting is found to have a velocity like that of spicules or a slow-shock-wave appearance, respectively. Up to 10 to the 31st ergs of thermal energy can be released at 80-90 km/sec by the untwisting process. Techniques for using model predictions in the interpretation of observations are discussed.

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