Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...251..669h&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 251, no. 2, Nov. 1991, p. 669-674.
Astronomy and Astrophysics
Astrophysics
14
Hydrodynamic Equations, Photosphere, Solar Activity, Solar Granulation, Solar Spectra, Astronomical Photometry, Chromosphere, Line Spectra, Solar Corona, Spatial Resolution
Scientific paper
Four examples of bisector and corresponding line parameter variations over a granular-intergranular region are discussed. These detailed case studies permit a direct comparison with hydrodynamical model calculations. Generally, the variation of the line parameters is found to be more similar than for data where granular and intergranular areas are averaged. However, the transition from granulum to intergranulum was found to be nonmonotonic and at the position where the velocity gradients reach a minimum, the slope of the line parameter curves also changes.
Hanslmeier Arnold
Mattig Wolfgang
Nesis Anastasios
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