Letter to the Editor
3D simulations of twisted magnetic flux ropes
S.B.F. Dorch 1,
V. Archontis 2 and
Å. Nordlund 2
Received 6 April 1999 / Accepted 3 November 1999
Several numerical simulations of buoyant 2D and 3D twisted flux ropes have been performed. It is found that the apex region of an anchored 3D flux rope behaves similarly to the simpler case of a 2D horizontal twisted flux tube while the overall structure of such a 3D flux rope developes quite differently. Upon emergence a characteristic S-shape of the magnetic field lines is displayed in agreement with observations in soft X-ray.
Key words: instabilities magnetic fields Magnetohydrodynamics (MHD) Sun: activity Sun: magnetic fields Sun: sunspots
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© European Southern Observatory (ESO) 1999
Online publication: December 2, 1999