The Origin of Bipolar Outflows

Millimetre wave observations of star forming regions in molecular clouds have made it clear that energetic bipolar outflows play a major role in the pre-main sequence evolution of low and high mass stars. An example of this link between outflow and star formation are the observations that a high fraction of infrared objects in the cores of star forming clouds such as Taurus, produce an outflow at some time during the life-time of the star-core …