Quasi-periodic patterns coupling the Sun, solar wind and the Earth

Details Quasi-periodic patterns coupling the Sun, solar wind and the Earth Quasi-periodic patterns coupling the Sun, solar wind and the Earth

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jastp..70.2112r&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 70, Issue 17, p. 2112-2117.

Physics

Solar Interior, Solar Electric And Magnetic Fields, Interplanetary Magnetic Fields

Scientific paper

The spectrum of velocity and magnetic fields in the solar wind is self-similar (power-law type) in the frequency range greater than >1/day indicating well-mixed turbulence. But it loses self-similarity for lower frequencies indicating the presence of large-scale patterns, which are intermittently generated inside the Sun and propagate from the Sun to the Earth. Here we discuss the spatia-temporal characteristics and origin of the 1.3-year quasi-periodic pattern found inside the Sun by helioseismic methods and detected in the solar wind. To identify and characterize this pattern on the Sun we use time series of solar magnetic Carrington maps generated at the Wilcox Solar Observatory and independent component data analysis. This analysis shows the latitudinal distribution of the pattern, its variable frequency and intermittent appearance.

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