Modelling of solar mesogranulation

Details Modelling of solar mesogranulation Modelling of solar mesogranulation

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009a%26a...504.1041m&link_type=abstract

Astronomy and Astrophysics, Volume 504, Issue 3, 2009, pp.1041-1055

Astronomy and Astrophysics

Astrophysics

4

Sun: Granulation

Scientific paper

We study whether mesogranulation flow patterns at the solar surface can arise solely from the statistical properties of granules and intergranular lanes. We have developed one- and two-dimensional models with local interaction rules between the artificial “granules” mimicking the actual physical processes on the solar surface. Defining mesogranulation according to the age of intergranular (downflow) lanes corresponding to the often applied “cork method”, as well as the areas of divergence of the horizontal velocity (two-dimensional model), we find that mesogranular patterns are present in our models. Our study of the dependence of the properties of the mesogranular patterns on the model parameter and interaction rules reveals that the patterns do not possess intrinsic length and time scales.
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