Between August 2014 and September 2016, ESA's Rosetta spacecraft rendezvoused with its target comet 67P/Churyumov-Gerasimenko and accompanied it through its perihelion passage. During the over-two-year operation, the scientific camera system on board Rosetta, OSIRIS, acquired more than 70,000 images of the comet with unprecedented resolution and coverage. In this talk, I will introduce our work on investigating gas and dust activities in the ambient coma of 67P's nucleus. Our analyses of the imaging data, combined with thermophysical and gas/dust dynamic models, show how water-ice sublimation could drive both nominal and uncommon cometary activities.
Speaker: Xian Shi, Max Planck Institute for Solar System Research
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