Speaker
Elizabeth Cole
(Department of Physics, University of Helsinki)
Description
We report the results from turbulent convection simulations in spherical wedges,
keeping the density stratification fixed and varying the rotation rate. An upper
limit to the Coriolis number that resulted in solar-like differential rotation is
reported, above which the simulations exhibit almost-rigid rotation profiles. Adding
a magnetic field into these rapid rotators within this interesting regime, we examine
the resulting dynamo, searching for equator-ward migration and changes in the
dominant dynamo mode. The wedges covering a quarter of the longitudinal extent were
extended to full 2pi to search for large-scale non-axisymmetric modes. These results
are put into context with observations of rapidly-rotating late-type stars.
Primary authors
Elizabeth Cole
(Department of Physics, University of Helsinki)
Maarit J. Mantere
(Department of Physics, University of Helsinki)
Petri J. Käpylä
(Department of Physics, University of Helsinki)
