Magnetic field propagation in a stellar dynamo

Details Magnetic field propagation in a stellar dynamo Magnetic field propagation in a stellar dynamo

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jsp....39..493g&link_type=abstract

Journal of Statistical Physics, Volume 39, Issue 5-6, pp. 493-499

Physics

10

Numerical Simulations, Stellar Dynamos

Scientific paper

Numerical simulations of stellar dynamos are reviewed. Dynamic dynamo models solve the nonlinear, three-dimensional, time-dependent, magnetohydrodynamic equations for the convective velocity, the thermodynamic variables, and the generated magnetic field in a rotating, spherical shell of ionized gas. When the dynamo operates in the convection zone, the simulated magnetic fields propagate away from the equator in the opposite direction inferred from the solar butterfly diagram. When simulated at the base of the convection zone, the fields propagate in the right direction at roughly the right speed. However, owing to the numerical difficulty, a full magnetic cycle has not been simulated in this region. As a result, it is still uncertain where and how the solar dynamo operates.

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