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University of Birmingham > Talks@bham > Astrophysics Talks Series > Planetary System Evolution: Giant Planet Eccentricity & Nonconservative N-body Dynamics
Planetary System Evolution: Giant Planet Eccentricity & Nonconservative N-body DynamicsAdd to your list(s) Download to your calendar using vCal
If you have a question about this talk, please contact Ilya Mandel. I will discuss two topics relevant to the evolution of young planetary systems: the eccentricity evolution of giant planets while they are still embedded in their natal disks, and a new approach to N-body dynamics that can be used to study a system during later times. In the first part of the talk I will show how entropy gradients within the disk can modify the eccentricity distribution of giant exoplanets, which may bear the imprint of the disk structure as a function of metallicity. In the second part, I will briefly review the principles behind symplectic integrators for conservative N-body dynamics. Utilizing a newly developed nonconservative action principle, I will demonstrate how this allows for the formulation of nonconservative (“Slimplectic”) variational integrators: numerical integrators with the long-term accuracy properties of symplectic integrators but for systems that have dissipation or other nonconservative physics (e.g. tides, radiation reaction, drag), allowing for long-term numerical study of planetary systems where dissipative interactions can play an important dynamical role. This talk is part of the Astrophysics Talks Series series. This talk is included in these lists:Note that ex-directory lists are not shown. |
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