Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-17T19:06:22.963Z Has data issue: false hasContentIssue false
  • English
  • Français

Time-Dependent Convective Collapse of Flux Tubes

Published online by Cambridge University Press:  04 August 2017

S. Sirajul Hasan
S. Sirajul Hasan*
Affiliation:
Indian Institute of Astrophysics Bangalore-560034. India

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 time-dependent collapse of a slender flux tube extending vertically in the convection zone of the Sun is modelled. Starting from an initial state in which the flux tube is in hydrostatic equilibrium, the non-linear MHD equations are used to examine its temporal evolution. A detailed study of the flow variables and magnetic field within the tube is presented. It is seen that asymptotically in time a unique state of dynamic equilibrium is established, irrespective of the value of βo (the ratio of the thermal to magnetic pressure at the initial epoch).

Type
I. Magnetic Fields in Stellar Photospheres
Information
Symposium - International Astronomical Union , Volume 102: Solar and Stellar Magnetic Fields: Origins and Coronal Effects , 1983 , pp. 73 - 77
Copyright
Copyright © Reidel 1983 

References

Hasan, S.S. and Venkatakrishnan, P.: 1980, Kodaikanal Obs. Bull. Ser. A 3, pp. 6–16.Google Scholar
Parker, E.N.; 1978, Astrophys. J. 221, p. 368–377.Google Scholar
Roberts, B. and Webb, A.R.: 1978, Solar Phys. 56, p. 5–35.Google Scholar
Spruit, H.C.: 1977, thesis, University of Utrecht, pp. 26–34.Google Scholar
Spruit, H.C. and Zweibel, E.G.: 1979, Solar Phys. 62, p. 15–22.CrossRefGoogle Scholar
Stenflo, J.O.: 1976, IAU Symp. No. 71, p. 69–99.Google Scholar
Vernazza, J.E., Avrett, E.H. and Loeser, R.: 1976, Astrophys. J. Supp. 30, p. 1–60.Google Scholar