especially the vacuum, of the quantum fields. For an appropriately chosen accelerated trajectory the radiation flux is thermal, and an analogy [@Davies77; @Walker85; @Carlitz87] can be drawn with Hawking radiation from a collapsing star [@Hawking75] that eventually forms a black hole. Since the thermal fluxes are correlated with the final vacuum fluctuations, some authors [@Wilczek93; @Hotta15] have proposed that the emission of the large amounts of information left in the black hole need not be accompanied by the eventual emission of a large amount of energy, providing a new perspective to the solution of the black hole information paradox [@Hawking76].

The trajectory of a uniformly accelerated mirror is of particular interest. When the mirror is uniformly accelerating, its trajectory is a hyperbola in spacetime, and both the energy flux and particle flux are zero [@Fulling76; @Davies77; @Birrell82; @Grove86]. Particles and energy are only radiated when the acceleration of the mirror changes. In the case that the mirror eternally accelerates, the energy flux along the horizon is divergent [@Frolov79; @Frolov80; @Frolov99]. This divergence is evidently related to the ideal assumption that the mirror accelerates for infinitely long time. One way to get rid of the divergence is to turn on and 