Galactic tide and local stellar perturbations on the Oort cloud: creation of interstellar comets

  title={Galactic tide and local stellar perturbations on the Oort cloud: creation of interstellar comets},
  author={Santiago Torres and Maxwell Xu Cai and A. G. A. Brown and Simon Portegies Zwart},
  journal={Astronomy \& Astrophysics},
Comets in the Oort cloud evolve under the influence of internal and external perturbations, such as giant planets, stellar passages, and the Galactic gravitational tidal field. We aim to study the dynamical evolution of the comets in the Oort cloud, accounting for the perturbation of the Galactic tidal field and passing stars. We base our study on three main approaches; analytic, observational, and numerical. We first construct an analytical model of stellar encounters. We find that individual… 
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