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Fig. 4
Time evolution of the scale radius (Rd). The projected particle number density on the XY plane was fitted using the approximation given by the Eq. (1). The coordinate R is the radius in cylindrical coordinates. The fitting parameters are Rd = (−0.7042 × 10-1 ± 0.2840 × 10-1) [ t/tH ] + (0.8819 ± 0.1620 × 10-1).
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