Scott Tremaine

TL;DR: In this paper, the authors studied three processes that eject hypervelocity (>10^3 km/s) stars from the Galactic center: (i) close encounters of two single stars, (ii) tidal breakup of binary stars by the central black hole, as originally proposed by Hills; and (iii) three-body interactions between a star and a binary black hole (BBH).

TL;DR: In this paper, an extensive series of numerical simulations of the evolution of comet orbits due to the gravitational perturbations of the giant planets are presented, and the results show that the inclination distribution of comets with large perihelion that evolve to observable comets is approximately preserved.

TL;DR: In this paper, the collisional dynamics of a differentially rotating disk of particles are considered and the relation between the coefficient of restitution and the optical depth of identical, inelastic, smooth spheres is derived.

TL;DR: In this article, a one-parameter family of models of stable sperical stellar systems in which the phase-space distribution function depends only on energy was described, which can be used to estimate the detectability of central black holes and the velocity-dispersion profiles of galaxies that contain central cusps, with or without a central black hole.

TL;DR: In this paper, a formule for the friction dynamique, analogue a celle de Chandrasekhar, is presented, where the effets de friction proviennent entierement des etoiles proches de the resonance.