Title:
------
3D simulations of twisted magnetic flux ropes

Authors:
--------
Bertil Dorch (ESMN, Royal Swedish Academy of Science, Stockholm),
Vasilis Archontis & Aake Nordlund (NBIfAFG, Copenhagen) 

Abstract:
---------
Several numerical simulations of buoyant 2D and 3D twisted magnetic 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 general agreement with 
observations is soft X-ray. 

To appear in:
-------------
The Letter section of A&A Main Journal.