Variation of Oscillation Mode Parameters over the Solar Cycle 23: An Analysis on Different Time Scales
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We investigate the variation in the mode parameters obtained from time series of length 9, 36, 72 and 108 days to understand the changes occurring on different time-scales. The regression analysis between frequency shifts and activity proxies indicates that the correlation and slopes are correlated and both increase in going from time series of 9 to 108 days. We also observe that the energy of the mode is anti-correlated with solar activity while the rate at which the energy is supplied remains constant over the solar cycle.
4 pages, To appear in the conference proceeding of GONG 2008 / SOHO XXI
4 pages, To appear in the conference proceeding of GONG 2008 / SOHO XXI