The Migration of Giant Planets
Almost all extra-solar giant planets are thought to have migrated to their present orbits through interactions with their nascent discs. The most widely invoked mechanism for this is called 'Type II migration' which assumes that the planet opens a gap in the disc, and then evolves viscously with it. Despite its widespread use, Type II migration has not been systematically tested. In this talk, I shall present the results of the first such test.