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Generation of magnetic fields by large-scale vortices in rotating convection
- Publication Year :
- 2015
-
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.<br />Comment: 8 pages, 6 figures, accepted for publication in Physical Review E
- Subjects :
- Physics - Fluid Dynamics
Astrophysics - Earth and Planetary Astrophysics
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1503.08599
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevE.91.041001