Fast Multipole Methods for $N$-body Simulations of Collisional Star Systems
Diptajyoti Mukherjee,
Qirong Zhu,
Hy Trac
et al.
Abstract:Direct N -body simulations of star clusters are accurate but expensive largely due to the numerous O(N 2 ) pairwise force calculations. State-of-the-art N -body codes can take nearly 6 months of computer wall time to simulate a single N = 10 6 globular cluster over a single relaxation time. To solve the post-million body problem, it will be necessary to use approximated force solvers, such as tree codes. In this work, we adapt a tree-based, optimized Fast Multipole Method (FMM) to the collisional N -body probl… Show more
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