Nonlinear hydrodynamical evolution of eccentric Keplerian discs in two dimensions: validation of secular theory

  title={Nonlinear hydrodynamical evolution of eccentric Keplerian discs in two dimensions: validation of secular theory},
  author={Adrian J. Barker and Gordon I. Ogilvie},
  journal={Monthly Notices of the Royal Astronomical Society},
  • A. BarkerG. Ogilvie
  • Published 8 March 2016
  • Physics, Geology
  • Monthly Notices of the Royal Astronomical Society
We perform global two-dimensional hydrodynamical simulations of Keplerian discs with free eccentricity over thousands of orbital periods. Our aim is to determine the validity of secular theory in describing the evolution of eccentric discs, and to explore their nonlinear evolution for moderate eccentricities. Linear secular theory is found to correctly predict the structure and precession rates of discs with small eccentricities. However, discs with larger eccentricities (and eccentricity… 

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