Physics
Scientific paper
Dec 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976soph...50..239c&link_type=abstract
Solar Physics, vol. 50, Nov.-Dec. 1976, p. 239-254.
Physics
68
Line Spectra, Photosphere, Solar Atmosphere, Solar Granulation, Solar Spectra, Velocity Distribution, Chromosphere, Iron, Perturbation Theory, Spectrum Analysis, Vertical Distribution, Weighting Functions
Scientific paper
Previous observations of spatially resolved vertical velocity variations in ten lines of Fe I spanning the height range from about 0 to 1000 km are reanalyzed using velocity weighting functions. The amplitudes and scale heights of granular and oscillatory velocities are determined, as well as those of the remaining unresolved velocities. It is found that the optimal representation of the amplitude of the outward-decreasing granular velocities is an exponentially decreasing function of height, with a scale height of 150 km and a velocity zero height of 1.27 km/s. The optimal representation of the same quantities for oscillatory velocities is an exponential increase with height, with a scale height of 1100 km and a velocity at zero height of 0.35 km/s. The remaining unresolved velocities decrease with height, with a scale height of 380 km and a velocity at zero height of 2.3 km/s.
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