Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....88..345k&link_type=abstract
Astronomy and Astrophysics, vol. 88, no. 3, Aug. 1980, p. 345-349.
Astronomy and Astrophysics
Astrophysics
3
Optical Data Processing, Power Spectra, Solar Granulation, Spectrum Analysis, Atmospheric Attenuation, High Resolution, Radial Distribution, Sequential Analysis, Solar Rotation, Statistical Analysis
Scientific paper
Optical data processing methods are used to analyze a good time sequence of selected high resolution solar granulation pictures obtained at the Vacuum solar telescope of Sacramento Peak Observatory. Several two-dimensional power spectra were composited and averaged by rotation to deduce a statistically significant distribution. No regularities appear on the deduced spectra. The speckles of partly instrumental origin seen on individual two-dimensional power spectra are stable, their characteristic life time being up to 7 min, indicating a similar lifetime for solar granulation.
Koutchmy Serge
Legait A.
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