Fig. A.1
Positions of the orbit of the planet, the gas pressure maximum, and the pebble-to-gas surface density ratio maximum in black, red, and dotted light green, respectively. We take the position of the gas pressure maximum as that of the pebble super-particle with the smallest |η| value. The conditions are Ṁpeb = 10−4 ME yr−1, the normal migration speed, and Disc A.
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