Connection between active longitudes and magnetic helicity

Details Connection between active longitudes and magnetic helicity Connection between active longitudes and magnetic helicity

2005-12-29

arxiv.org/abs/astro-ph/0512639v1

Astronomy and Astrophysics

Astrophysics

6 pages, 5 figures, in Solar activity: exploration, understanding and prediction, ed: H. Lundstedt, ESA, ESTEC Noordwijk

Scientific paper

A two-dimensional mean field dynamo model is solved where magnetic helicity conservation is fully included. The model has a negative radial velocity gradient giving rise to equatorward migration of magnetic activity patterns. In addition the model develops longitudinal variability with activity patches travelling in longitude. These patches may be associated with active longitudes.

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