  We study the motion-induced radiation due to the non-relativistic motion of
an atom, coupled to the vacuum electromagnetic field by an electric dipole
term, in the presence of a static graphene plate. After computing the
probability of emission for an accelerated atom in empty space, we evaluate the
corrections due to the presence of the plate. We show that the effect of the
plate is to increase the probability of emission when the atom is near the
plate and oscillates along a direction perpendicular to it. On the contrary,
for parallel oscillations there is a suppression. We also evaluate the quantum
friction on an atom moving at constant velocity parallel to the plate. We show
that there is a threshold for quantum friction: friction occurs only when the
velocity of the atom is larger than the Fermi velocity of the electrons in
graphene.
