Periodic Change of Solar Differential Rotation

Details Periodic Change of Solar Differential Rotation Periodic Change of Solar Differential Rotation

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005apj...618.1044i&link_type=abstract

The Astrophysical Journal, Volume 618, Issue 2, pp. 1044-1048.

Astronomy and Astrophysics

Astronomy

8

Magnetohydrodynamics: Mhd, Sun: Helioseismology, Sun: Magnetic Fields, Sun: Oscillations, Sun: Rotation, Turbulence

Scientific paper

The periodic oscillation of the inhomogeneous rotation of the Sun is studied by use of the MHD dynamo theory. There exists a turbulent electromotive force that is driven by the vorticity of the flow (i.e., the γ dynamo). In addition, its counterpart exists in the vorticity equation, that is, the rotation is induced by an inhomogeneous magnetic field in turbulent plasmas through the γ-dynamo process. Based on this dynamo theory, a periodic change of solar differential rotation with a period of 11 yr is theoretically explained under the prescribed solar magnetic cycle. The predicted amplitude is compared with observations.

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