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Examples of Non-Thermal Motions as Seen on the Sun

Published online by Cambridge University Press:  12 April 2016

Jacques M. Beckers
Jacques M. Beckers*
Affiliation:
Sacramento Peak Observatory†, Sunspot, NM 88349/USA

Summary

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On the sun we can identify many of the motions derived from stellar spectral analysis. A summary is given of the observed solar velocity phenomena. Many of these (e.g. meridional flow, giant cells, solar differential rotation, supergranulation) are of great interest in astrophysics especially for interior structure and chromospheric and coronal structuring but contribute virtually nothing to the velocities derived from a solar irradiance spectrum analysis. Others (granulation, very small scale motions and to a lesser extent, oscillations) do contribute substantially to the integrated sun velocity analysis. Some of the properties of these motion fields are described.

Type
2. Observed Properties of Stellar Turbulence
Information
International Astronomical Union Colloquium , Volume 51: Stellar Turbulence , 1980 , pp. 85 - 101
Copyright
Copyright © Springer-Verlag 1980

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