Thermal Convection, Magnetic Field, and Differential Rotation in Solar-type Stars

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 la...

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Bibliographic Details
Main Author: Hotta, Hideyuki
Format: eBook
Language:English
Published: Tokyo Springer Japan 2015, 2015
Edition:1st ed. 2015
Series:Springer Theses, Recognizing Outstanding Ph.D. Research
Subjects:
Online Access:
Collection: Springer eBooks 2005- - Collection details see MPG.ReNa
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245 0 0 |a Thermal Convection, Magnetic Field, and Differential Rotation in Solar-type Stars  |h Elektronische Ressource  |c by Hideyuki Hotta 
250 |a 1st ed. 2015 
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300 |a XII, 81 p. 49 illus., 11 illus. in color  |b online resource 
505 0 |a 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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653 |a Planetary science 
653 |a Space Physics 
653 |a Solar system 
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520 |a 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