On the relativistic Lagrange-Laplace secular dynamics for extrasolar systems

Abstract

We study the secular dynamics of extrasolar planetary systems by extending the Lagrange-Laplace theory to high order and by including the relativistic effects. We investigate the long-term evolution of the planetary eccentricities via normal form and we find an excellent agreement with direct numerical integrations. Finally we set up a simple analytic criterion that allows to evaluate the impact of the relativistic effects in the long-time evolution.

4 pages, 4 figures, Proceedings IAU Symposium No. S310 (Complex Planetary Systems)