[BAA Comets] Homogeneous dust emission and jet structure near active cometary nuclei: the case of 67P/Churyumov-Gerasimenko

[Jeremy Shears]

Pre-print on ArXiv today: http://arxiv.org/abs/1505.08041
by Tobias Kramer, Matthias Noack, Daniel Baum, Hans-Christian Hege, Eric J. Heller
Abstract:We compute trajectories of dust grains starting from a homogeneous surface activity-profile. Despite the homogeneous initial distribution a collimation in jet-like structures becomes visible. The fine structure is caused by topographical features with similar bundles of normal vectors. Gravitational forces are accurately determined from the triangular surface mesh. For the comet 67P/Churyumov-Gerasimenko, we find several areas of good agreement between the homogeneous dust emission model and Rosetta observation of dust jets.
Jeremy