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Helioseismology

Published online by Cambridge University Press:  12 April 2016

Ronald L. Gilliland
Ronald L. Gilliland*
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218USA1

Abstract

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Observations of solar p-mode oscillations over the last two decades have provided a fundamentally new and unique means of probing the Sun’s interior structure. The history of understanding solar oscillations as trapped normal-mode pulsations will be briefly discussed. The large number of excited modes seen in the Sun have been used to constrain the solar core structure, determine the convection zone depth and to fix the variation of angular velocity with depth and latitude. Standard stellar structure and evolution theory does remarkably well in matching the helioseismic results. Further work promises to reveal the solar helium abundance. Upcoming network and space observations should provide the stability and resolution necessary to return detailed information on near-surface structures associated with solar activity.

Type
Part 1. The Scientific Programme
Information
International Astronomical Union Colloquium , Volume 155: Astrophysical Applications of Stellar Pulsation , 1995 , pp. 98 - 108
Copyright
Copyright © Astronomical Society of the Pacific 1995

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