49 citations · 275 across the 12 of their papers we have counts for
5 papers · 1 filter
KETJU -- resolving small-scale supermassive black hole dynamics in GADGET-4
Matias Mannerkoski, Alexander Rawlings, Peter H. Johansson +5
We present the new public version of the KETJU supermassive black hole (SMBH) dynamics module, as implemented into GADGET-4. KETJU adds a small region around each SMBH where the dy…
BIFROST: simulating compact subsystems in star clusters using a hierarchical fourth-order forward symplectic integrator code
Antti Rantala, Thorsten Naab, Francesco Paolo Rizzuto +3
We present BIFROST, an extended version of the GPU-accelerated hierarchical fourth-order forward symplectic integrator code FROST. BIFROST (BInaries in FROST) can efficiently evolv…
MSTAR -- a fast parallelised algorithmically regularised integrator with minimum spanning tree coordinates
Antti Rantala, Pauli Pihajoki, Matias Mannerkoski +2
We present the novel algorithmically regularised integration method MSTAR for high accuracy () integrations of N-body systems using minimum spanning tree c…
Barycentric interpolation on Riemannian and semi-Riemannian spaces
Pauli Pihajoki, Matias Mannerkoski, Peter H. Johansson
Interpolation of data represented in curvilinear coordinates and possibly having some non-trivial, typically Riemannian or semi-Riemannian geometry is an ubiquitous task in all of…
Ray-tracing and polarized radiative transfer in General Relativity
Pauli Pihajoki, Antti Rantala, Peter H. Johansson
We discuss the problem of polarized radiative transfer in general relativity. We present a set of equations suitable for solving the problem numerically for the case of an arbitrar…