Bifurcation of force-free solar magnetic fields: A numerical approach
โ Scribed by Klaus Jockers
- Publisher
- Springer
- Year
- 1978
- Tongue
- English
- Weight
- 832 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0038-0938
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โฆ Synopsis
Numerical calculations of two-dimensional force-free fields as models of solar active regions are presented. For a given 'toroidal' component of the photospheric magnetic field two branches of solutions are numerically obtained which merge at the critical point of maximum allowed toroidal magnetic field. Depending on boundary conditions magnetic islands may or may not form. The results are discussed with respect to their relevance to the flare process.
๐ SIMILAR VOLUMES
At first it is shown that a magnetic field being force-free, i.e. satisfying V โข B = aB, with a = constant (ct r O) in the whole exterior of the Sun cannot have a finite energy content and cannot be determined uniquely from only one magnetic field component given at the photosphere. Then the boundar
Investigations on the numerical calculation of the force-free magnetic field for solar active regions and its application, carried out by the author and his collaborators in recent years, is summarized. In this paper, some existing numerical calculations of constant a force-free fields for active re