  We study numerically the nonequilibrium dynamics of the three-dimensional
Heisenberg Edwards-Anderson spin glass submitted to protocols during which
temperature is shifted or cycled within the spin glass phase. We show that
(partial) rejuvenation and (perfect) memory effects can be numerically observed
and study both effects in detail. We quantitatively characterize their
dependences on parameters such as the amplitude of the temperature changes, the
timescale at which the changes are performed, and the cooling rates used to
vary the temperature. We contrast our results both to those found numerically
in the Ising version of the model, and to experimental results in different
samples. We discuss the theoretical interpretations of our findings, arguing,
in particular, that `full' rejuvenation can be observed in experiments even if
temperature chaos is absent.
