Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2011-07-12
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
Accepted in ApJ
Scientific paper
We show that simple 2 and 3-layer flux-transport dynamos, when forced at the top by a poloidal source term, can produce a widely varying amplitude of toroidal field at the bottom, depending on how close the meridional flow speed of the bottom layer is to the propagation speed of the forcing applied above the top layer, and how close the amplitude of the $\alpha$-effect is to two values that give rise to a resonant response. This effect should be present in this class of dynamo model no matter how many layers are included. This result could have implications for the prediction of future solar cycles from the surface magnetic fields of prior cycles. It could be looked for in flux-transport dynamos that are more realistic for the Sun, done in spherical geometry with differential rotation, meridional flow and $\alpha$-effect that vary with latitude and time as well as radius. Because of these variations, if resonance occurs, it should be more localized in time, latitude and radius.
Dikpati Mausumi
Gilman Peter A.
No associations
LandOfFree
Resonance in Forced Flux Transport Dynamos does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Resonance in Forced Flux Transport Dynamos, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resonance in Forced Flux Transport Dynamos will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-165048