Volume 396, Number 3, December IV 2002
|Page(s)||1011 - 1014|
|Section||Planets and planetary systems|
|Published online||05 December 2002|
A new model for the lower overshoot layer in the Sun
Eötvös University, Department of Astronomy, Budapest, Pf. 32, 1518 Hungary SPARC, Department of Applied Mathematics, University of Sheffield, Hicks Building, Hounsfield Road, S3 7RH, Sheffield, UK
Corresponding author: D. Marik, email@example.com
Accepted: 5 September 2002
We present a model for the lower overshoot layer of the Sun, based on the realistic solar stratification, without the use of a “mixing-length” parameter, by solving the system of Reynolds momentum equations using the closure formalism of Canuto & Dubovikov ([CITE]). A fixed value of velocity anisotropy is assumed, and the local convection model is assumed to be valid for the convectively unstable layer. In accordance with seismic constraints, overshoot (defined as the amount by which the convectively mixed zone extends beyond its boundary in local theory) is found to be as low as about 6 percent of the pressure scale height, and it is not bounded by a discontinuity from below.
Key words: Sun: interior / methods: numerical / turbulence
© ESO, 2002
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.