Fig. 9.
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Final distributions of U/USI in 2D simulations with symmetrical (upper) and asymmetrical (lower) collapse, centered on the density peak. In the asymmetrical case, the second smaller over-density was initially located to the right. The minimum in the symmetrical case is around U/USI ≈ 2 × 10−2, while in the asymmetrical case its is U/USI ≈ 2.
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