Abstract
We discuss the winding of a force-free axisymmetric magnetic field rooted on a heavy conductor onz=0. In quadrupolar symmetry the field expands in the half-spacez>0 and the toroidal flux concentrates on a conical surface. After a mean twist of 208°, the conical layer hosts large toroidal current loops with reversal of the magnetic flux on either side. The evolution of the field structure is described by scale-free static solutionsB∼r −(p+2), withp taking values between 0 and 2. The large expansion factor of the field structure is suggestive of flaring originating on the solar photosphere.
Similar content being viewed by others
References
Aly, J.-J.: 1984,Astrophysical Journal,283, 349
Aly, J.-J.: 1994,Astronomy & Astrophysics,288, 1012
Lynden-Bell, D.: 1994, in Cosmical Magnetism, D. Lynden-Bell (ed.), Cambridge: Institue of Astronomy, p. 16
Lynden-Bell, D. & Boily, C.M.: 1994,MNRAS,267, 146
Sturrock, P.A. & Barnes, C.: 1972a,b.,Astrophysical Journal,174, 659;176, 31
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Boily, C.M., Lynden-Bell, D. Wound magnetostatics and flaring. Astrophys Space Sci 243, 29–32 (1996). https://doi.org/10.1007/BF00644029
Issue Date:
DOI: https://doi.org/10.1007/BF00644029