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Solar Rotation and Large-Scale Flows Measured by Time-Distance Helioseismology from Mdi

Published online by Cambridge University Press:  08 February 2017

P.M. Giles  and
T.L. Duvall JR.
P.M. Giles
Affiliation:
Dept of Applied Physics, Stanford University, Stanford, CA 94305-4085 USA
T.L. Duvall JR.
Affiliation:
Laboratory for Astronomy and Solar Physics, NASA/Goddard Space Flight Center, Greenbelt, MD 20771 USA

Abstract

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The technique of time-distance helioseismology provides a new tool for examining large-scale flows beneath the sun's surface. We have used this technique to study the meridional flow and have found that the poleward flow observed at the surface appears to persist to a depth of at least 26,000 km. We have also examined the differential rotation in these uppermost layers, and find a slight asymmetry between the northern and southern hemispheres.

Type
III. Large-Scale Structure of the Sun
Information
Symposium - International Astronomical Union , Volume 185: New Eyes to See Inside the Sun and Stars , 1998 , pp. 149 - 152
Copyright
Copyright © Kluwer 1998 

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