What does helioseismology tell us about solar cycle related structural changes in the Sun?

Details What does helioseismology tell us about solar cycle related structural changes in the Sun? What does helioseismology tell us about solar cycle related structural changes in the Sun?

2002-05-03

arxiv.org/abs/astro-ph/0205049v1

Astronomy and Astrophysics

Astrophysics

To appear in Proc. SOHO-11, `` From Solar Min to Max: Half a Solar Cycle with SOHO,'' ESA SP-508

Scientific paper

Solar oscillations frequencies show a distinct change with solar activity. The changes in frequencies can be used to study the time variation of solar structure. We discuss constraints on the changes in solar structure with time as obtained with helioseismic data covering the last six years. The frequency variations appear to be dominated by changes in the near-surface layers rather than by changes in the structure of the deeper layers.

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