Variation of Oscillation Mode Parameters over the Solar Cycle 23: An Analysis on Different Time Scales

Details Variation of Oscillation Mode Parameters over the Solar Cycle 23: An Analysis on Different Time Scales Variation of Oscillation Mode Parameters over the Solar Cycle 23: An Analysis on Different Time Scales

2009-03-11

arxiv.org/abs/0903.2074v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

4 pages, To appear in the conference proceeding of GONG 2008 / SOHO XXI

Scientific paper

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.

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