Radial orbit instability: review and perspectives

Abstract

This paper presents elements about the radial orbit instability, which occurs in spherical self-gravitating systems with a strong anisotropy in the radial velocity direction. It contains an overview on the history of radial orbit instability. We also present the symplectic method we use to explore stability of equilibrium states, directly related to the dissipation induced instability mechanism well known in theoretical mechanics and plasma physics.

10 pages, submitted to Transport Theory and Statistical Physics, proceedings of Vlasovia 2009 International Conference. Corrected for typos, redaction, and references added

References in corpus (6)

• On Universal Halos and the Radial Orbit Instability
• The Role of the Radial Orbit Instability in Dark Matter Halo Formation and Structure
• The Radial Orbit Instability in Collisionless N-Body Simulations
• On the equilibrium morphology of systems drawn from spherical collapse experiments
• A Counterpart to the Radial Orbit Instability in Triaxial Stellar Systems
• Radial orbit instability as a dissipation-induced phenomenon

Cited by in corpus (7)

• Milking the spherical cow: on aspherical dynamics in spherical coordinates
• Discreteness effects, $N-$body chaos and the onset of radial-orbit instability
• Linear response theory and damped modes of stellar clusters
• Particle number dependence in the non-linear evolution of N-body self-gravitating systems
• Phase-space structure analysis of self-gravitating collisionless spherical systems
• Radially anisotropic systems with $r^{-\alpha }$ forces. II: radial-orbit instability
• KRIOS: A new basis-expansion $N$-body code for collisional stellar dynamics