Maximum radial acceleration on the Phaethon’s equator. As in Fig. 6, the maximum acceleration on the equator is calculated for a wide range of particle sizes (0.5- 40 μm) before (a) and after (b) the perihelion passage. The black vertical line corresponds to thePhaethon’s perihelion. The numbers on the contour plots are in units of mm s^-2, and the thickness of the contour increases as the acceleration value increases for fixed contour levels . The blue dashed and red solid lines indicate olivine and magnetite, respectively.