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Manu Stalport (Geneva University, Switzerland)
October 26, 2022 @ 10:30 - 11:30
Title: A calibration of chaos for the refinement of planetary systems
Abstract: The observed diversity of planetary systems raises questions that challenge the formation and evolution models. A precise knowledge of the systems architectures is key in order to identify the leading processes shaping them. In this presentation, I will discuss on how the study of chaos can provide a more precise view of the planetary systems. A particular interest is drawn on a numerical chaos indicator, namely the Numerical Analysis of Fundamental Frequencies (NAFF, J. Laskar), and its link with orbital instability. Combining the lessons learned together with a Bayesian exploration of the parameter space, we design a technique used to refine the planet parameters. I will illustrate this approach on a few notable planetary systems.
The seminar will take place in room S09 at the Faculty of Sciences