Generation of Torsional Oscillations in the Sun

  • Y. V. Vandakurov
Conference paper
Part of the International Astronomical Union book series (IAUS, volume 138)


The hypothesis is considered that the torsional wave observed on the Sun is an eigenmode oscillation excited in the presence of a weak poloidal magnetic field. We derive asymptotic linear equations for a perturbation with a large number of nodes along the radius, assuming the rotation to be slow and the characteristic perturbation period to be much longer than the rotational period. The results of a preliminary numerical study of the stability of the torsional mode indicate that the superadiabaticity of the solar convection may contribute to the excitation of this mode. In the present work the approximation of harmonic radial dependence of the perturbation has been used.


Solar Phys Convection Zone Torsional Oscillation Torsional Mode Toroidal Magnetic Field 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Boyer, D.W., Levy E.H. (1984) Astrophys. J. 277, 848–861.ADSCrossRefGoogle Scholar
  2. Howard, R., LaBonte, B.J. (1980) Astrophys. J. 239, L33–L36.ADSCrossRefGoogle Scholar
  3. Kleeorin, N.I., Ruzmaikin, A.A. (1984) Pis’ma Astron. Zh. 10, 925–930.Google Scholar
  4. LaBonte, B.J., Howard, R. (1982) Solar Phys. 75, 161–178.ADSCrossRefGoogle Scholar
  5. Layzer, D., Krook, M., Menzel, D.H. (1955) Proc. Roy. Soc. A233, 302–310.ADSGoogle Scholar
  6. Makarov, V.I., Sivaraman, K.R. (1989) This Symposium.Google Scholar
  7. Pudovkin, M.I., Benevolenskaja, E.E. (1984) Astron. Zh. 61, 783–788.ADSGoogle Scholar
  8. Schüssler, M. (1984) Astron. Astrophys. 94, L17–L18.Google Scholar
  9. Snodgrass, H.B. (1987a), Solar Phys. 110, 35–49.ADSCrossRefGoogle Scholar
  10. Snodgrass, H.B. (1987b), Astrophys. J. 316, L91–L94.ADSCrossRefGoogle Scholar
  11. Snodgrass, H.B., Wilson P.R. (1987), Nature 328, 696–699.ADSCrossRefGoogle Scholar
  12. Taylor, J.B. (1963), Proc. Roy. Soc. A274, 274–283.ADSGoogle Scholar
  13. Vandakurov, Yu.V. (1988), Pis’ma Astron. Zh. 14, 334–343.ADSGoogle Scholar
  14. Walén, C. (1948), On the vibratory rotation of the Sun, Henrik Lindståhls Bokhandel, Stockholm.Google Scholar
  15. Wilson, P.R. (1987), Solar Phys. 110, 59–71.ADSCrossRefGoogle Scholar
  16. Yoshimura, H. (1981), Astrophys. J. 247, 1102–1112.ADSCrossRefGoogle Scholar

Copyright information

© International Astronomical Union 1990

Authors and Affiliations

  • Y. V. Vandakurov
    • 1
  1. 1.A.F. Ioffe Physical Technical InstituteAcademy of Sciences of the USSRLeningradUSSR

Personalised recommendations