Thermal convection, magnetic field, and differential rotation in solar-type stars
Author(s)
Bibliographic Information
Thermal convection, magnetic field, and differential rotation in solar-type stars
（Springer theses : recognizing outstanding Ph. D. research）
Springer, 2015
- : pbk
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"Doctoral thesis accepted by the University of Tokyo, Tokyo, Japan"--T.p.
"Softcover reprint of the hardcover 1st edition 2015"--T.p. verso
Includes bibliographical references
Description and Table of Contents
Description
This thesis describes the studies on the solar interior where turbulent thermal convection plays an important role. The author solved, for the first time, one of the long-standing issues in solar physics, i.e., the maintenance mechanism of the solar differential rotation in the near-surface shear layer. The author attacked this problem with a newly developed approach, the reduced speed of sound technique, which enabled him to investigate the surface and deep solar layers in a self-consistent manner. This technique also made it possible to achieve an unprecedented performance in the solar convection simulations for the usage of the massively parallel supercomputers such as the RIKEN K system. It was found that the turbulence and the mean flows such as the differential rotation and the meridional circulation mutually interact with each other to maintain the flow structures in the Sun. Recent observations by helioseismology support the author's proposed theoretical mechanism. The book also addresses the generation of the magnetic field in such turbulent convective motions, which is an important step forward for solar cyclic dynamo research.
Table of Contents
General Introduction.- Basic Equations and Development of Numerical Code.- Structure of Convection and Magnetic Field without Rotation.- Reproduction of Near Surface Shear Layer with Rotation.- Concluding Remarks.- Appendix.
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