  We consider an ensemble of globally coupled phase oscillators whose
interaction is transmitted at finite speed. This introduces time delays, which
make the spatial coordinates relevant in spite of the infinite range of the
interaction. We show that one-dimensional arrays synchronize in an asymptotic
state where all the oscillators have the same frequency, whereas their phases
are distributed in spatial structures that -in the case of periodic boundaries-
can propagate, much as in coupled systems with local interactions.
