Crisis-induced intermittency in truncated mean field dynamos

Details Crisis-induced intermittency in truncated mean field dynamos Crisis-induced intermittency in truncated mean field dynamos

1997-08-12

arxiv.org/abs/astro-ph/9708108v1

Astronomy and Astrophysics

Astrophysics

Figures included. Full paper(s) with full colour pictures is available at http://www.maths.qmw.ac.uk/~eoc

Scientific paper

10.1103/PhysRevE.55.6641

We investigate the detailed dynamics of a truncated $\alpha\omega$ dynamo model with a dynamic $\alpha$ effect. We find the presence of multiple attractors, including two chaotic attractors with a fractal basin boundary which merge to form a single attractor as the control parameter is increased. By considering phase portraits and the scaling of averaged times of transitions between the two attractors, we demonstrate that this merging is accompanied by a crisis-induced intermittency. We also find a range of parameter values over which the system has a fractal parameter dependence for fixed initial conditions. This is the first time this type of intermittency has been observed in a dynamo model and it could be of potential importance in accounting for some forms of intermittency in the solar and stellar output.

Affiliated with

Also associated with

No associations

Rating

Crisis-induced intermittency in truncated mean field 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 Crisis-induced intermittency in truncated mean field dynamos, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crisis-induced intermittency in truncated mean field dynamos will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-727009