Temporal variations of the Sun's internal structure and dynamics: a theoretical perspective
Abstract
As is well known from surface observations of magnetic fields, flow fields and radiation fluxes, the Sun is a highly dynamical object and varies on many timescales, one of the most prominent being the 22-year period of the solar activity cycle. Recently there has been much direct evidence from helioseismology (e.g. the many contributions to this Session) for temporal variations also in the solar interior, on timescales of months and years. In this review talk I consider the theoretical expectations of how the solar interior (structure, magnetic field, velocity field) might change over the solar cycle and on other timescales, how these changes can be expected to influence the measurable properties of the oscillations, and possible theoretical interpretations of some of the recent helioseismic results on temporal variations of the solar interior.
- Publication:
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SOHO 10/GONG 2000 Workshop: Helio- and Asteroseismology at the Dawn of the Millennium
- Pub Date:
- January 2001
- Bibcode:
- 2001ESASP.464...39T
- Keywords:
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- SUN: OSCILLATIONS;
- SUN: INTERIOR