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Helioseismic inferences
Shibahashi, Hiromoto
AA(Department of Astronomy, University of Tokyo, Tokyo 113-0033, Japan )
Solar and Stellar Variability: Impact on Earth and Planets, Proceedings of the International Astronomical Union, IAU Symposium, Volume 264, p. 33-38
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magneothydrodynamics: MHD, Sun: activity, Sun: helioseismology, Sun: magnetic fields
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The brilliant outcome of some 30 years of helioseismology spreads over a wide range of topics. Some highlights relevant to the cause of the solar activity cycle are listed up. The rotation profile in the solar convective zone is discussed as an important source of the dynamo mechanism. The kinematic dynamo model is described in the linear approximation, and the condition for the solar type dynamo is derived. It is shown that comparison of this condition with the rotation profile determined from helioseismology is useful to identify the possible seats of the dynamo.

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