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Context. Findings by the Helios and STEREO mission have indicated thepresence of a resonant circumsolar ring of dust associated with Venus. Attemptsto model this phenomenon as an analogue to the resonant ring of Earth - as aresult of migrating dust trapped in external mean-motion resonances (MMRs) -have so far been unable to reproduce the observed dust feature. Other theoriesof origin have recently been put forward. However, the reason for the lowtrapping efficiency of Venus's external MMRs remains unclear. Aims. Here welook into the nature of the dust trapping resonant phenomena that arise fromthe multi-planet configuration of the inner Solar System, aiming to add to theexistent understanding of resonant dust rings in single planet systems.Methods. We numerically modelled resonant dust features associated with theinner planets and specifically looked into the dependency of these structuresand the trapping efficiency of particular resonances on the configuration ofplanets. Results. Besides Mercury showing no resonant interaction with themigrating dust cloud, we find Venus, Earth, and Mars to considerably interferewith each other's resonances, influencing their ability to form circumsolarrings. We find that the single most important reason for the weakness ofVenus's external MMR ring is the perturbing influence of its outer neighbour -Earth. In addition, we find Mercury and Mars to produce crescent-shaped densityfeatures, caused by a directed apsidal precession occurring in particlestraversing their orbital region.

Effects of neighbouring planets on the formation of resonant dust rings in the inner Solar System