Non-linear dynamo waves in an incompressible medium when the turbulence dissipative coefficients depend on temperature

Details Non-linear dynamo waves in an incompressible medium when the turbulence dissipative coefficients depend on temperature Non-linear dynamo waves in an incompressible medium when the turbulence dissipative coefficients depend on temperature

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997angeo..15...97p&link_type=abstract

Annales Geophysicae, vol. 15, Issue 1, pp.97-100

Physics

Scientific paper

Non-linear - dynamo waves existing in an incompressible medium with the turbulence dissipative coefficients depending on temperature are studied in this paper. We investigate of - solar non-linear dynamo waves when only the first harmonics of magnetic induction components are included. If we ignore the second harmonics in the non-linear equation, the turbulent magnetic diffusion coefficient increases together with the temperature, the coefficient of turbulent viscosity decreases, and for an interval of time the value of dynamo number is greater than 1. In these conditions a stationary solution of the non-linear equation for the dynamo wave's amplitude exists; meaning that the magnetic field is sufficiently excited. The amplitude of the dynamo waves oscillates and becomes stationary. Using these results we can explain the existence of Maunder's minimum.

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