Physics
Scientific paper
Mar 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979soph...61..251d&link_type=abstract
Solar Physics, vol. 61, Mar. 1979, p. 251-270.
Physics
34
Solar Granulation, Solar Velocity, Data Reduction, Modulation Transfer Function, Solar Eclipses, Solar Oscillations, Solar Spectra, Velocity Distribution
Scientific paper
Spectral observations of solar velocity fields made during a partial solar eclipse are described. Continuum intensity measurements at the lunar limb allow the modulation transfer function to be derived and the true spatial power spectrum of the velocity field to be reconstructed. The oscillatory and granular components are separated by applying spatial filters cutting off at 3.7 sec. The oscillatory component values are in good agreement with those of Canfield (1976) but the granular component has substantially more power and a smaller height gradient. The discrepancy can be resolved by noting the uncertainties of the seeing corrections and of the separation into components in the work of Canfield.
Durrant C. J.
Mattig Wolfgang
Nesis Anastasios
Reiss Guenter
Schmidt Wolfram
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