Currently the most popular method to evolve black-hole binaries is the
``moving puncture'' method. It has recently been shown that when puncture
initial data for a Schwarzschild black hole are evolved using this method, the
numerical slices quickly lose contact with the second asymptotically flat end,
and end instead on a cylinder of finite Schwarzschild coordinate radius. These
slices are stationary, meaning that their geometry does not evolve further. We
will describe these results in the context of maximal slices, and present
time-independent puncture-like data for the Schwarzschild spacetime.Comment: Proceedings for 29th Spanish Relativity Meeting. Added more details
about the time-independent solution, with reference to the analytic result of
Baumgarte and Naculic
