Context. Hierarchical triple stars are ideal laboratories for studying the interplay between
orbital dynamics and stellar evolution. Both mass loss from stellar winds and strong …

Close encounters between two bodies in a disc often result in a single orbital deflection.
However, within their Jacobi volumes, where the gravitational forces between the two bodies …

Context. The three-body problem (3BP) poses a longstanding challenge in physics and
celestial mechanics. Despite the impossibility of obtaining general analytical solutions …

In self-gravitating N-body systems, small perturbations introduced at the start, or infinitesimal
errors that are produced by the numerical integrator or are due to limited precision in the …

Supermassive black holes (SMBHs) play an important role in galaxy evolution. Binary and
triple SMBHs can form after galaxy mergers. A third SMBH may accelerate the SMBH …

Eccentric mergers are a signature of the dynamical formation channel of binary black holes
(BBHs) in dense stellar environments and hierarchical triple systems. Here, we investigate …

The time-step criterion plays a crucial role in direct N-body codes. If not chosen carefully, it
will cause a secular drift in the energy error. Shared, adaptive time-step criteria commonly …

Despite the discovery of thousands of exoplanets in recent years, the number of known
exoplanets in star clusters remains tiny. This may be a consequence of close stellar …

We study the influence of relativity on the chaotic properties and dynamical outcomes of an
unstable triple system; the Pythagorean three-body problem. To this end, we extend the …

The Universe contains everything that exists, including life. And all that exists, including life,
obeys universal physical laws. Do those laws then give adequate foundations for a complete …