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Figure 8
Figure 8: Snapshots of the rest-mass density in the collision of fluid balls with boost factor γ = 8 (upper panels) and γ = 10 (lower panels) at the initial time, shortly after collision, at the time corresponding to the formation of separate horizons in the γ = 10 case, and formation of a common horizon (for γ = 10) and at late time in the dispersion (γ = 8) or ringdown (γ = 10) phase. Image reproduced with permission from [288], copyright by APS.