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Fig. 1

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Size distributions in different collisional runs. Thin lines are initial distributions, while thick ones correspond to an advanced state of collisional evolution. Note that the initial size distribution of the “n” run coincides with the debiased population of TNOs. A is the cross-section density per size decade at a distance of 40  AU. Note that A = const. (i.e. horizontal lines) corresponds to a size distribution with q = 3, where different-sized objects equally contribute to the cross-section. The gray shaded rectangle is a rough approximation of the particle dust flux given by New Horizons translated into the cross-section density and distances of the EKB.

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