  In this work we examine and extend the proposal of reference
\cite{Rosabal:2018hkx}, concerning the new interpretation on the Unruh effect.
The vacuum processes in Minkowski and Rindler space are described in detail, in
connection with the observers perspective. We highlight the presence of
antiparticles in the radiation, which is perhaps the main observation in the
cited reference. We present a new derivation of the vacuum energy in Rindler
space using the Schr\"odinger kernel. The quest for the Unruh radiation could
be expanded by considering the possibility of detecting the antiparticles in
it. A proposal for the experimental confirmation of the antiparticles in the
radiation is presented.

General Physics