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The Unruh effect is one of the first calculations of what one would see whentransiting between an inertial reference frame with its quantum field vacuumstate and a non-inertial (specifically, uniformly accelerating) referenceframe. The inertial reference frame's vacuum state would not correspond to thevacuum state of the non-inertial frame and the observer in that frame would seeradiation, with a corresponding Bose distribution and a temperatureproportional to the acceleration (in natural units).  In this paper, I compute the response of this non-inertial observer to asingle frequency mode in the inertial frame and deduce that, indeed, thecumulative distribution (over the observer's proper time) of frequenciesobserved by the accelerating observer would be the Bose distribution with atemperature proportional to the acceleration. The conclusion is that the Unruheffect (and the related Hawking effect) is generic, in that it would appearwith any incoming incoherent state and the Bose distribution is obtained as aconsequence of the non-inertial frame's motion, rather than some specialproperty of the quantum vacuum. As a consequence of the analysis of a coherentset of signals, I show to extract information from the spectrum that anaccelerated observer would see (as well as from the radiation from a blackhole).

An observer's perspective of the Unruh and Hawking effects -- using coherent signals to extract information from a black hole