The coalescent structure of continuous-time Galton–Watson trees
The coalescent structure of continuous-time Galton–Watson trees
Take a continuous-time Galton–Watson tree. If the system survives until a large time $T$, then choose $k$ particles uniformly from those alive. What does the ancestral tree drawn out by these $k$ particles look like? Some special cases are known but we give a more complete answer. We concentrate on …