演講資訊

摘要：

It has been 30 years ago when the spacecraft, Halley Armada, met to the comet 1P/Halley in 1986. Since then, a lot of cometary activities have been detected and studied in more detail by in-situ observations of the comet flyby missions. However, some other issues still remain to be explained. For instance, how the activities form from the cometary surface, where the source regions locate for these activities, and so on. The Rosetta mission is trying to solve these questions by a continuous monitoring of a nucleus activity at high spatial and temporal resolution. In this work, we are going to present the overall cometary activity including some transient events detected by on-board instrument, OSIRIS, and the link between the activities and surface topography.