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Richard Altrock Submitted: 2007-10-12 15:13
Torsional Oscillations (TO) were first observed on the surface of
the Sun as waves of small deviations from differential rotation, which propagate
from high latitudes to the equator over solar-cycle time scales. More recently
they have been inferred from observations of solar global oscillations to occur
in the convection zone. Long-lived brightenings in the corona have also been
observed to propagate from near the poles to the equator over similar time
scales. This paper will discuss the relationship between TO as observed on the
solar surface and in the convection zone and brightenings in the corona. We find
that there is an apparent connection between these two phenomena that extends
from the equator to latitudes as high as 70◦ to 80◦. This may imply control of
both of these phenomena by the driver of the solar cycle (the solar dynamo) and
thus place observational constraints on dynamo models.
Authors: Richard Altrock, Rachel Howe and Roger Ulrich
Projects: GONG
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Publication Status: In Press in Proceedings of the 24th NSO Workshop, Subsurface and Atmospheric Influences on Solar Activity
Last Modified: 2007-10-12 15:13
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