115 citations · 744 across the 44 of their papers we have counts for
4 papers · 1 filter
Invariant manifolds and the response of spiral arms in barred galaxies
P. Tsoutsis, C. Kalapotharakos, C. Efthymiopoulos +1
The unstable invariant manifolds of the short-period family of periodic orbits around the unstable Lagrangian points and of a barred galaxy define loci in the configura…
Dynamics and chaos in the unified scalar field Cosmology
Georgios Lukes-Gerakopoulos, Spyros Basilakos, George Contopoulos
We study the dynamics of the closed scalar field FRW cosmological models in the framework of the so called Unified Dark Matter (UDM) scenario. Performing a theoretical as well as a…
Orbital structure in N-Body models of barred galaxies
N. Voglis, M. Harsoula, G. Contopoulos
We study the orbital structure of a self-consistent N-body equilibrium configuration of a barred galaxy constructed from cosmological initial conditions. The value of its spin para…
Diffusion and scaling in escapes from two-degree-of-freedom Hamiltonian systems
Henry E. Kandrup, Christos Siopis, George Contopoulos +1
This paper summarises an investigation of the statistical properties of orbits escaping from three different two-degree-of-freedom Hamiltonian systems which exhibit global stochast…