Figure 3

The elliptic flow as observed in the rest frame of one of the projectiles by using the variable $|\eta|-y_{beam}$ ($y_{beam}=7.99$) for the event averaged $0$-$40\%$ centrality range. The results from $\mathrm{v}_2\{2\}$ from this analysis are compared to lower energy results from PHOBOS . The vertical lines represent the statistical uncertainties and the boxes represent the systematic uncertainties. For the PHOBOS results only statistical errors are shown.
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