## Prevailing Dust-transport Directions on Comet 67P/Churyumov–Gerasimenko

• Dust transport and deposition behind larger boulders on the comet 67P/Churyumov–Gerasimenko (67P/C–G) have been observed by the Rosetta mission. We present a mechanism for dust-transport vectors based on a homogeneous surface activity model incorporating in detail the topography of 67P/C–G. The combination of gravitation, gas drag, and Coriolis force leads to specific dust transfer pathways, which for higher dust velocities fuel the near-nucleus coma. By distributing dust sources homogeneously across the whole cometary surface, we derive a global dust-transport map of 67P/C–G. The transport vectors are in agreement with the reported wind-tail directions in the Philae descent area.

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Author: Tobias Kramer, Matthias Noack Article The Astrophysical Journal Letters 813 2 L33 2015 http://dx.doi.org/10.1088/2041-8205/813/2/L33

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