Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...211..447s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 211, no. 2, March 1989, p. 447-462. Research supported by SNSF.
Astronomy and Astrophysics
Astrophysics
44
Magnetic Flux, Solar Atmosphere, Solar Magnetic Field, Cooling, Field Strength, Heating, Optical Thickness
Scientific paper
A parametric survey of numerically-generated, axially-symmetric two-dimensional magnetostatic fluxtubes is conducted to quantify the sensitivity of the properties of fluxtube models. It is found that heating of a static fluxtube atmosphere leads to an increase in the gas pressure above the level where the heating occurs, causing the fluxtube to fan out more rapidly with height. The heating also leads an increase in the opacity, causing to an upward shift in the surfaces of constant optical depth in the tube. The magnitude of these effects depends upon the temperature excess in the tube relative to that in the surrounding photosphere and upon the level in the tube atmosphere where heating is introduced. The consequences of these results for fluxtube models are discussed.
Pizzo Victor J.
Steiner Oskar
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