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Two-dimensional spatial power spectra of photospheric velocity fluctuations

โœ Scribed by Richard G. Teske

Book ID
104649971
Publisher
Springer
Year
1974
Tongue
English
Weight
771 KB
Volume
39
Category
Article
ISSN
0038-0938

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โœฆ Synopsis

Two-dimensional spatial autocorrelation functions and power spectral density distributions were obtained from high-resolution velocity spectroheliograms. Although the autocorrelation functions indicate the existence of velocity cells of size roughly 2500 to 3500 km, the power spectra fail to reveal them because the cells are not strictly spatially periodic.

๐Ÿ“œ SIMILAR VOLUMES

Two-dimensional spatial spectrum of the
Two-dimensional spatial spectrum of the photospheric brightness field near to the solar disc center
โœ V. N. Karpinsky; V. V. Mekhanikov ๐Ÿ“‚ Article ๐Ÿ“… 1977 ๐Ÿ› Springer ๐ŸŒ English โš– 570 KB

From high-quality direct frames taken by the Soviet Stratospheric Solar Observatory, using coherent optical methods, the two-dimensional spatial spectrum of the photospheric brightness field was obtained (Figure 1). This spectrum is isotropic and continuous. Spectral densities if(k) and where k is