Limits to penetration of meridional circulation below the Solar Convection Zone

We show that meridional circulation, such as that observed at the top of and in the solar convection zone (CZ) by direct doppler and helioseismic techniques, cannot penetrate significantly below the bottom (similar to0.7 R-circle dot) of the overshoot layer at the bottom of the CZ. Therefore, solar dynamo models that rely on penetration as deep as to 0.6 R-circle dot are ruled out. The analysis we carried out to reach this conclusion elucidates two boundary layers, one of which we have not seen applied to astrophysical problems before. This analysis should be relevant to understanding interfaces between convective and radiative zones in stellar interiors generally.

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Copyright 2004 The American Astronomical Society.
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Author Gilman, Peter A.
Miesch, Mark
Publisher UCAR/NCAR - Library
Publication Date 2004-08-10T00:00:00
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Topic Category geoscientificInformation
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Metadata Date 2025-07-17T17:08:10.809408
Metadata Record Identifier edu.ucar.opensky::articles:21821
Metadata Language eng; USA
Suggested Citation Gilman, Peter A., Miesch, Mark. (2004). Limits to penetration of meridional circulation below the Solar Convection Zone. UCAR/NCAR - Library. https://n2t.org/ark:/85065/d7fr00fk. Accessed 05 August 2025.

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