Periodic change of solar differential rotation

S. I. Itoh, K. Itoh, A. Yoshizawa, N. Yokoi

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)1044-1048
Number of pages5
JournalAstrophysical Journal
Issue number2 I
Publication statusPublished - Jan 10 2005

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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