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arXiv · 1503.08599

Generation of magnetic fields by large-scale vortices in rotating convection

Celine Guervilly·David W. Hughes·Chris A. Jones
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Abstract

We propose a new self-consistent dynamo mechanism for the generation of large-scale magnetic fields in natural objects. Recent computational studies have described the formation of large-scale vortices (LSVs) in rotating turbulent convection. Here we demonstrate that for magnetic Reynolds numbers below the threshold for small-scale dynamo action, such turbulent flows can sustain large-scale magnetic fields --- i.e. fields with a significant component on the scale of the system.

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Celine Guervilly, David W. Hughes, Chris A. Jones. 2015-03-30. Generation of magnetic fields by large-scale vortices in rotating convection. https://doi.org/10.1103/physreve.91.041001

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