Paper:	Correlation Analysis of Mode Frequencies with Activity Proxies at Different Phases of the Solar Cycle
Volume:	416, Solar-Stellar Dynamos as Revealed by Helio- and Asteroseismology: GONG 2008/SOHO 21
Page:	189
Authors:	Jain, K.; Tripathy, S. C.; Hill, F.
Abstract:	We analyze intermediate degree p- and f-mode eigenfrequencies measured by GONG and SOHO/MDI 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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