How Hypervelocity Stars Tell Us Something about the Milky Way

Typical stars in the Milky Way travel with velocities of approximately 100-300 kilometres per second.  However, hypervelocity stars (HVS) travel at over a thousand kilometres per second. How can we explain these ultra-high velocities?

PhD candidate Fraser Evans wrote his PhD thesis on this phenomenon and argues that observations of hypervelocity stars can help constrain still-uncertain aspects of these extreme phenomena. HVS can, for example, tell us more about the gravity of black holes or the amount of energy a supernova produces. 

Read his interview here 

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How the speed demons of the universe tell us something about the Milky Way