Temporal wake
From Memory Alpha, the free Star Trek reference.
A temporal wake is a physical phenomenon created by a temporal vortex that protects anything in the area of space immediately surrounding a rift from a change or alteration of the timeline.
In 2373, a Borg cube attacking Earth released a Borg sphere which created a temporal rift that took it back to mid-21st century Earth. The USS Enterprise-E, however, was caught in the temporal wake of the rift, and was able to follow the sphere through time and prevent the assimilation of Humanity. (Star Trek: First Contact)
