scholarly journals Λ-effect, Meridional Flow and the Differential Solar Rotation

1991 ◽  
Vol 130 ◽  
pp. 172-177
Author(s):  
G. Rüdiger ◽  
I. Tuominen
Keyword(s):  
Angular Momentum ◽  
Convection Zone ◽  
Meridional Circulation ◽  
Solar Rotation ◽  
Meridional Flow ◽  
Rossby Number ◽  
Solar Convection Zone ◽  
Solar Convection ◽  
Turbulence Parameters ◽  
Simple Picture

AbstractRotation laws for the solar convection zone are produced by the Λ-effect in rotating anisotropic turbulence fields. In this paper we use the structure of the turbulence parameters introduced by Rüdiger and Kichatinov (1990), based on a simplified turbulence model. When we neglect the meridional circulation, for small inverse Rossby numbers the angular velocity isolines are spherical, while for increasing inverse Rossby number they approach more and more the helioseismologically derived shape. This simple picture becomes more complicated if the meridional circulation is allowed to act as an angular momentum transporter.

Temporal Variation of Angular Momentum in the Solar Convection Zone

2003 ◽  
Vol 586 (1) ◽  
pp. 650-662 ◽  
Author(s):  
R. Komm ◽  
R. Howe ◽  
B. R. Durney ◽  
F. Hill
Keyword(s):  
Angular Momentum ◽  
Temporal Variation ◽  
Convection Zone ◽  
Solar Convection Zone ◽  
Solar Convection

scholarly journals Rotation in the solar convection zone inferred from Fabry-Perot observations of the 5-min oscillations

1988 ◽  
Vol 123 ◽  
pp. 49-52
Author(s):  
Frank Hill ◽  
David M. Rust ◽  
Thierry Appourchaux
Keyword(s):  
Lithium Niobate ◽  
Rotation Rate ◽  
Convection Zone ◽  
Solar Rotation ◽  
Inversion Method ◽  
Solar Convection Zone ◽  
Solar Convection ◽  
Fabry Perot ◽  
Full Disk ◽  
Solar Rotation Rate

Full disk observations of the 5-min solar oscillations have been obtained with a lithium niobate Fabry-Perot filter. The equatorial solar rotation rate as a function of depth has been inferred from the sectoral modes of oscillation using the Backus-Gilbert optimal averaging inversion method. The results show a rotation rate that slowly decreases over the depths of 15 to 56 Mm below the photosphere. The results are in agreement with the previous Duvall-Harvey observations.

scholarly journals MERIDIONAL FLOW IN THE SOLAR CONVECTION ZONE. I. MEASUREMENTS FROM GONG DATA

2014 ◽  
Vol 784 (2) ◽  
pp. 145 ◽  
Author(s):  
S. Kholikov ◽  
A. Serebryanskiy ◽  
J. Jackiewicz
Keyword(s):  
Convection Zone ◽  
Meridional Flow ◽  
Solar Convection Zone ◽  
Solar Convection

scholarly journals Search for Giant Cells in the Solar Convection Zone

1980 ◽  
Vol 91 ◽  
pp. 21-23 ◽  
Author(s):  
B. J. Labonte ◽  
R. Howard
Keyword(s):  
Large Scale ◽  
Convection Zone ◽  
Solar Rotation ◽  
Longitudinal Velocity ◽  
Giant Cells ◽  
Solar Convection Zone ◽  
Solar Convection ◽  
Mount Wilson Observatory ◽  
Entire Dataset ◽  
Full Disk

The Mount Wilson Observatory has obtained daily full disk digital magnetograms of the Sun since 1966, with 12 to 17 arcsecond resolution. As each magnetogram is taken, the position of the Doppler line shift compensator is also recorded, thus giving a full disk map of the longitudinal velocity. This entire dataset is currently being rereduced on a uniform basis (Howard et al., 1980), and daily arrays of residual velocities are being formed by removing large scale patterns, e.g., Earth's motions, solar rotation, limbshift. Data from the years 1972 through 1978 are used here.

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