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Numerical simulations of Hall MHD small-scale dynamos

Published online by Cambridge University Press:  21 October 2010

Daniel O. Gómez
Affiliation:
Departamento de Fí sica, FCEN-UBA, (1428) Buenos Aires, Argentina Instituto de Astronomía y Física del Espacio, CC 67 Suc 28, (1428) Buenos Aires, Argentina
Pablo D. Mininni
Affiliation:
Departamento de Fí sica, FCEN-UBA, (1428) Buenos Aires, Argentina National Center for Atmospheric Research, Boulder, CO 80307, USA
Pablo Dmitruk
Affiliation:
Departamento de Fí sica, FCEN-UBA, (1428) Buenos Aires, Argentina
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Abstract

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Much of the progress in our understanding of dynamo mechanisms, has been made within the theoretical framework of magnetohydrodynamics (MHD). However, for sufficiently diffuse media, the Hall effect eventually becomes non-negligible. We present results from three dimensional simulations of the Hall-MHD equations subjected to random non-helical forcing. We study the role of the Hall effect in the dynamo efficiency for different values of the Hall parameter, using a pseudospectral code to achieve exponentially fast convergence.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2010

References

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