Jeff Kuhn
Michigan State University
What Makes the Sun a Variable Star -- New Helioseismic, Photometric
and Numerical Insights
On short timescales we tend to think of Main Sequence stars as static,
one-dimensional astrophysical building blocks. In fact, we now know that
the large scale solar structure is neither spherically symmetric, nor static.
While many of these perturbations are subtle they are profound enough to
suggest important problems in our understanding of stellar convection and
rotation. Stellar convection is a difficult, multi-scale problem, linking
widely separated time and length scales, but through recent advances in
photometry, helioseismology, and numerical simulation a new understanding of
some of these longstanding problems has been generated.