Noise, friction and the radial-orbit instability in anisotropic stellar systems: stochastic N-body simulations

Abstract

By means of numerical simulations we study the radial-orbit instability in anisotropic self-gravitating $N-$body systems under the effect of noise. We find that the presence of additive or multiplicative noise has a different effect on the onset of the instability, depending on the initial value of the orbital anisotropy.

6 pages, 3 figures. To appear in the proceedings of the 364 IAU symposium, "Multi-scale (time and mass) Dynamics of Space Objects" 18-22 October 2021, Iasi Roumania

References in corpus (2)

• Discreteness effects, $N-$body chaos and the onset of radial-orbit instability
• Noise-Induced Phase Space Transport in Time-Periodic Hamiltonian Systems