Solar wind velocity at solar maximum: A search for latitudinal effects

Details Solar wind velocity at solar maximum: A search for latitudinal effects Solar wind velocity at solar maximum: A search for latitudinal effects

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004angeo..22.3721b&link_type=abstract

Annales Geophysicae, vol. 22, Issue 10, pp.3721-3727

Physics

Scientific paper

Observations by Ulysses during its second out-of-ecliptic orbit have shown that near the solar activity maximum the solar wind appears as a highly variable flow at all heliolatitudes. In the present study Ulysses data from polar latitudes are compared to contemporary ACE data in the ecliptic plane to search for the presence of latitudinal effects in the large-scale structure of the solar wind velocity. The investigated period roughly covers the Sun's magnetic polarity reversal. The Ulysses-ACE comparison is performed through a multi-scale statistical analysis of the velocity fluctuations at scales from 1 to 64 days. The results indicate that, from a statistical point of view, the character of the wind velocity structure does not appear to change remarkably with latitude. It is likely that this result is characteristic of the particular phase of the solar magnetic cycle.

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