Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...293..572m&link_type=abstract
Astronomy and Astrophysics 293, 572-576 (1995)
Astronomy and Astrophysics
Astrophysics
6
Activity Of The Sun, Magnetic Fields, Method: Data Analysis
Scientific paper
The power spectrum of total solar irradiance is studied and compared to spectra of other solar global parameters. These have false periodicities originating from the rotation and hence convolution of the spatial distribution of the features on the solar disk and the limb-darkening function. Ranges for which the spectral density follows a power-law are identified and the fractal dimension is estimated. The time-varying nature of the periodicities is illustrated by comparing the dynamic spectra of the irradiance and activity indices. They show consistent features presented in global parameters. Both coherence and transfer function modulus of the solar mean magnetic field (SMMF) and the total irradiance are estimated. From the results of this analysis, it is concluded that these parameters are causally related.
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