EVOLUTION OF MULTIPLE-STAR SYSTEMS
The discovery of gravitational waves from merging black holes by LIGO in 2015 has revitalized the area of gravitational wave astrophysics. The origin of black hole and neutron star mergers is still unclear, however, and various scenarios have been proposed. This project (the main project of the Research Group) focuses on the evolution of multiple-star systems such as triples, quadruples, and binary systems in galactic nuclei. We model the complex interplay between dynamical, stellar, and binary processes in these systems. The goal is to make predictions for the statistical properties of merging compact objects, revealed to us through gravitational waves, and thereby gain insight into the evolution of multiple stars.
Dynamics of planetary systems in single stars or higher-order stellar systems (binaries, triples, etc.). Applications include the formation of hot Jupiters through high-eccentricity migration.