91 citations · 539 across the 22 of their papers we have counts for
5 papers · 1 filter
Punctuated Chaos and Indeterminism in Self-gravitating Many-body Systems
Tjarda C. N. Boekholt, Simon F. Portegies Zwart, Douglas C. Heggie
Dynamical chaos is a fundamental manifestation of gravity in astrophysical, many-body systems. The spectrum of Lyapunov exponents quantifies the associated exponential response to…
Reversible time-step adaptation for the integration of few-body systems
Tjarda C. N. Boekholt, Timothee Vaillant, Alexandre C. M. Correia
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…
A direct N-body integrator for modelling the chaotic, tidal dynamics of multi-body extrasolar systems: TIDYMESS
Tjarda C. N. Boekholt, Alexandre C. M. Correia
Tidal dissipation plays an important role in the dynamical evolution of moons, planets, stars and compact remnants. The interesting complexity originates from the interplay between…
The relativistic Pythagorean three-body problem
Tjarda C. N. Boekholt, Arend Moerman, Simon F. Portegies Zwart
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 B…
On the minimal accuracy required for simulating self-gravitating systems by means of direct N-body methods
Simon Portegies Zwart, Tjarda Boekholt
The conservation of energy, linear momentum and angular momentum are important drivers for our physical understanding of the evolution of the Universe. These quantities are also co…