Fast Multipole Methods for $N$-body Simulations of Collisional Star Systems

Diptajyoti Mukherjee, Qirong Zhu, Hy Trac +1

Direct $N$-body simulations of star clusters are accurate but expensive, largely due to the numerous $\mathcal{O}(N^2)$ pairwise force calculations. To solve the post-million-body…