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The energy-momentum tensor of a supersonic heavy quark jet moving through astrongly-coupled $\mathcal{N}=4$ SYM plasma is analyzed in terms of first-orderNavier-Stokes hydrodynamics. We focus on the near zone ``head'' region close tothe heavy quark where deviations from hydrodynamic behavior are expected to belarge. For realistic quark velocities, $v=0.99$, we find that thenon-hydrodynamical head region is confined at a narrow pancake surrounding thejet with a width $\sim 1/T$ and transverse radius $\sim 3/T$. Outside this jethead region, the jet induced stress is well approximated by Navier-Stokeshydrodynamics.

Near Zone Hydrodynamics of AdS/CFT Jet Wakes