Abstract
We numerically study the event horizons of two kinds of five-dimensional coalescing black hole solutions with different asymptotic structures: the five-dimensional Kastor-Traschen solution (5DKT) and the coalescing black hole solution on Eguchi-Hanson space (CBEH). Topologies of the spatial infinity are and , respectively. We show that the crease sets of event horizons are topologically in 5DKT and in CBEH, respectively. If we choose the time slices that respect space-time symmetry, the first contact points of the coalescing process is a point in the 5DKT case but a in the CBEH case. We also find that in CBEH, time slices can be chosen so that a black ring with topology can be also formed during a certain intermediate period unlike the 5DKT.
- Received 29 June 2009
DOI:https://doi.org/10.1103/PhysRevD.80.064030
©2009 American Physical Society