Correlation Analysis of Mode Frequencies with Activity Proxies at Different Phases of the Solar Cycle

Details Correlation Analysis of Mode Frequencies with Activity Proxies at Different Phases of the Solar Cycle Correlation Analysis of Mode Frequencies with Activity Proxies at Different Phases of the Solar Cycle

2009-02-09

arxiv.org/abs/0902.1555v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

4 pages, submitted to conference proceedings of GONG 2008 / SOHO XXI

Scientific paper

We analyze intermediate degree p- and f-mode eigenfrequencies measured by GONG and MDI/SOHO for a complete solar cycle to study their correlation with solar activity. We demonstrate that the frequencies do vary linearly with the activity, however the degree of correlation differs from phase to phase of the cycle. During the rising and the declining phases, the mode frequencies are strongly correlated with the activity proxies whereas during the low- and high-activity periods, the frequencies have significantly lower correlation with all the activity proxies considered here.

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