  Minijets and jets are produced in large numbers in nuclear collisions at TeV
energies, so that there are many of them in a single fireball. They deposit
non-negligible amount of momentum and energy into the hydrodynamically
expanding bulk and cause anisotropies of the expansion. Moreover, due to their
multiple production in a single event the resulting anisotropies are correlated
with the collision geometry and thus contribute positively also to
event-averaged anisotropies in non-central collisions. Using simulations with
three-dimensional ideal hydrodynamic model we demonstrate the importance of
this effect. It must be taken into account if conclusions about the properties
of the hot matter are to be drawn.
