On the long-term stability of the Solar System in the presence of weak perturbations from stellar flybys
arXiv:2206.14240 · doi:10.1093/mnras/stac1763
Abstract
The architecture and evolution of planetary systems are shaped in part by stellar flybys. Within this context, we look at stellar encounters which are too weak to immediately destabilize a planetary system but are nevertheless strong enough to measurably perturb the system's dynamical state. We estimate the strength of such perturbations on secularly evolving systems using a simple analytic model and confirm those estimates with direct N-body simulations. We then run long-term integrations and show that even small perturbations from stellar flybys can influence the stability of planetary systems over their lifetime. We find that small perturbations to the outer planets' orbits are transferred between planets, increasing the likelihood that the inner planetary system will destabilize. Specifically, our results for the Solar System show that relative perturbations to Neptune's semi-major axis of order 0.1% are strong enough to increase the probability of destabilizing the Solar System within 5 Gyrs by one order of magnitude.
11 pages, 7 figures, accepted for publication in MNRAS
References in corpus (16)
- The Planet Nine Hypothesis
- Dynamics of Planetary Systems in Star Clusters
- AMD-stability and the classification of planetary systems
- Predicting the long-term stability of compact multiplanet systems
- Stability of Multiplanetary Systems in Star Clusters
- Cross Sections for Planetary Systems Interacting with Passing Stars and Binaries
- Chaotic Disintegration of the Inner Solar System
- The Great Inequality and the Dynamical Disintegration of the Outer Solar System
- On the survival of resonant and non-resonant planetary systems in star clusters
- Dynamic stability of the Solar System: Statistically inconclusive results from ensemble integrations
- Long-term dynamics of the solar system inner planets
- Rare Event Sampling Improves Mercury Instability Statistics
- Cradle(s) of the Sun
- 8 in 10 Stars in the Milky Way Bulge Experience Stellar Encounters Within 1000 AU in a Gigayear
- Birth cluster simulations of planetary systems with multiple super-Earths: initial conditions for white dwarf pollution drivers
- A repository of vanilla long term integrations of the Solar System
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- General relativistic precession and the long-term stability of the solar system
- Rendez-vous with massive interstellar objects, as triggers of destabilisation
- HD 7977 and its possible influence on Solar System bodies
- Oort Cloud Formation and Evolution in Star Clusters
- Limits on Stellar Flybys in the Solar Birth Cluster