Publication Date:
2015-01-31
Description:
The predictability of a system indicates how much time a computed orbit is close to an actual orbit of the system, independent of its stability or chaotic nature. We derive a predictability index from the distributions of finite-time Lyapunov exponents of several prototypical orbits, both regular and irregular, in a variety of galactic potentials. In addition, by analysing the evolution of the shapes of the distributions with the finite-time intervals sizes, we get an insight into the time-scales of the model when the flow dynamics evolve from the local to the global regime.
Print ISSN:
0035-8711
Electronic ISSN:
1365-2966
Topics:
Physics