Solar granulation and bright points in the sunspot umbra - Comparison of power spectra

Details Solar granulation and bright points in the sunspot umbra - Comparison of power spectra Solar granulation and bright points in the sunspot umbra - Comparison of power spectra

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980crasb.290..541a&link_type=abstract

Academie des Sciences (Paris), Comptes Rendus, Serie B - Sciences Physiques, vol. 290, no. 24, June 30, 1980, p. 541-544. In Fr

Astronomy and Astrophysics

Astronomy

1

Astronomical Photometry, Solar Activity Effects, Solar Granulation, Sunspots, Astronomical Photography, Brightness, Fourier Transformation, Power Spectra, Spectrum Analysis

Scientific paper

A picture of the solar granulation and a picture of the bright umbral points of a sunspot were used to deduce separately by a Fourier transform power spectrum method the distributions of their spectral densities. Both pictures are taken as a selected part of a large scale picture of the sunspot. The comparison of their power spectra is discussed, and displays an important difference in the high-frequency part of the spectrum.

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