The Acceleration History of the Universe and the Properties of the Dark Energy

Understand

The model-independent method of using type Ia supernovae proposed and developed by Daly and Djorgovski (2003, 2004) has been applied to the Riess et al.

• (2007) supernovae sample.
• Assuming only a Robertson-Walker metric, we find that the universe is accelerating today.
• This result is purely kinematic, is independent of the contents of the universe, and does not require that a theory of gravity be specified.