Interaction Of Twisted Dipolar Loops

Details Interaction Of Twisted Dipolar Loops Interaction Of Twisted Dipolar Loops

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spd....40.1206s&link_type=abstract

American Astronomical Society, SPD meeting #40, #12.06; Bulletin of the American Astronomical Society, Vol. 41, p.828

Astronomy and Astrophysics

Astronomy

Scientific paper

We investigate, by means of 3D MHD simulations, the interaction of twisted coronal magnetic loops. The simulation is initialized with one or two dipoles anchored in the photosphere. A kinematic rotational motion is applied to the central parts of the dipolar regions at the photosphere so that a flux tube within each dipole becomes twisted. Simulations are performed for a single and for twin dipole flux tubes. We compare our results with Ozaki & Sato (1997). We find that the boundary conditions, in particular the closed upper boundary, are critical to obtaining the very high twist values seen by Ozaki & Sato (1997).

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