Hostname: page-component-78c5997874-dh8gc Total loading time: 0 Render date: 2024-11-14T06:46:34.111Z Has data issue: false hasContentIssue false
  • English
  • Français

Numerical simulations of sunspots

Published online by Cambridge University Press:  01 August 2006

G. J. J. Botha ,
A. M. Rucklidge  and
N. E. Hurlburt
G. J. J. Botha
Affiliation:
Department of Applied Mathematics, University of Leeds, Leeds LS2 9JT, UK email: gert@maths.leeds.ac.uk; A.M.Rucklidge@leeds.ac.uk
A. M. Rucklidge
Affiliation:
Department of Applied Mathematics, University of Leeds, Leeds LS2 9JT, UK email: gert@maths.leeds.ac.uk; A.M.Rucklidge@leeds.ac.uk
N. E. Hurlburt
Affiliation:
Lockheed Martin Solar and Astrophysics Laboratory, Organization L9-41, Building 252, Palo Alto, CA 94304, USA email: hurlburt@lmsal.com
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The origin, structure and evolution of sunspots are investigated using a numerical model. The compressible MHD equations are solved with physical parameter values that approximate the top layer of the solar convection zone. A three dimensional (3D) numerical code is used to solve the set of equations in cylindrical geometry, with the numerical domain in the form of a wedge. The linear evolution of the 3D solution is studied by perturbing an axisymmetric solution in the azimuthal direction. Steady and oscillating linear modes are obtained.

Keywords

(magnetohydrodynamics:) MHDSun: magnetic fieldssunspots
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S239: Convection in Astrophysics , August 2006 , pp. 507 - 509
Copyright
Copyright © International Astronomical Union 2007

References

Botha, G.J.J., Rucklidge, A.M., & Hurlburt, N.E. 2006, MNRAS 369, 1611CrossRefGoogle Scholar
Dedner, A., Kemm, F., & Kröner, D. et al. , 2002, J. Comp. Phys. 175, 645CrossRefGoogle Scholar
Hurlburt, N.E. & Rucklidge, A.M. 2000, MNRAS 314, 793CrossRefGoogle Scholar
Langhans, K., Scharmer, G.B., & Kiselman, D. et al. , 2005, A&A 436, 1087Google Scholar
Lele, S.K. 1992, J. Comp. Phys. 103, 16Google Scholar
Rimmele, T.R. 2004, ApJ 604, 906Google Scholar
Sankarasubramanian, K. & Rimmele, T. 2003, ApJ 598, 689CrossRefGoogle Scholar
Sobotka, M., Vázquez, M., & Bonet, J.A. et al. , 1999, ApJ 511, 436CrossRefGoogle Scholar