A growing dynamo from a saturated Roberts flow dynamo
| dc.creator | Tilgner, Andreas | |
| dc.creator | Brandenburg, Axel | |
| dc.date | 2008-08-15 | |
| dc.date | 2008-10-18 | |
| dc.date.accessioned | 2026-07-07T10:19:38Z | |
| dc.date.available | 2026-07-07T10:19:38Z | |
| dc.description | Using direct simulations, weakly nonlinear theory and nonlinear mean-field theory, it is shown that the quenched velocity field of a saturated nonlinear dynamo can itself act as a kinematic dynamo. The flow is driven by a forcing function that would produce a Roberts flow in the absence of a magnetic field. This result confirms an analogous finding by F. Cattaneo & S. M. Tobias (arXiv:0809.1801) for the more complicated case of turbulent convection, suggesting that this may be a common property of nonlinear dynamos; see also the talk given also online at the Kavli Institute for Theoretical Physics (http://online.kitp.ucsb.edu/online/dynamo_c08/cattaneo). It is argued that this property can be used to test nonlinear mean-field dynamo theories. | |
| dc.description | 5 pages, 2 figures, accepted by MNRAS | |
| dc.identifier | https://arxiv.org/abs/0808.2141 | |
| dc.identifier | http://arxiv.org/abs/0808.2141 | |
| dc.identifier | Monthly Notices Roy. Astron. Soc. 391, 1477-1481 (2008) | |
| dc.identifier | doi:10.1111/j.1365-2966.2008.14006.x | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/174584 | |
| dc.subject | Astrophysics | |
| dc.title | A growing dynamo from a saturated Roberts flow dynamo | |
| dc.type | text |