Does High-Latitude Solar Activity Lead Low-Latitude Solar Activity in Time Phase?

Details Does High-Latitude Solar Activity Lead Low-Latitude Solar Activity in Time Phase? Does High-Latitude Solar Activity Lead Low-Latitude Solar Activity in Time Phase?

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006apj...646.1392l&link_type=abstract

The Astrophysical Journal, Volume 646, Issue 2, pp. 1392-1397.

Astronomy and Astrophysics

Astronomy

1

Sun: Activity, Sun: Filaments, Sun: General

Scientific paper

Using data from the Carte Synoptique solar filaments archive, we investigate whether there is a time lag between high-latitude solar activity and low-latitude solar activity. The cross-correlation analysis of the number of high-latitude filaments per Carrington rotation (NHF) and that of low-latitude filaments per Carrington rotation (NLF) shows, although inconclusively, that NLF possibly lags behind NHF. The periodic characteristics of both NHF and NLF clearly indicate that the activity of high-latitude filaments is evidently leading the activity of low-latitude filaments. Thus, the present study suggests that high-latitude solar activity leads low-latitude solar activity in time phase.

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