Elliptic flow from event-by-event hydrodynamics

We present an event-by-event hydrodynamical framework which takes into account the initial density fluctuations arising from a Monte Carlo Glauber model. The elliptic flow is calculated with the event plane method and a one-to-one comparison with the measured event plane v₂ is made. Both the centrality- and p_T-dependence of v₂ are remarkably well reproduced. We also find that the participant plane is a quite good approximation for the event plane.