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Supernovae, the Accelerating Cosmos, and Dark Energy

Published online by Cambridge University Press:  05 March 2015

Brian Schmidt
Brian Schmidt*
Affiliation:
Reserach School of Astronomy & Astrophysics, Australia National University, Mount Stromlo Observatory, Canberra ACT 2611, Australia email: [email protected]
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Abstract

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Type Ia supernovae remain one of Astronomy's most precise tools for measuring distances in the Universe. I describe the cosmological application of these stellar explosions, and chronicle how they were used to discover an accelerating Universe in 1998 - an observation which is most simply explained if more than 70% of the Universe is made up of some previously undetected form of ‘Dark Energy’. Over the intervening 13 years, a variety of experiments have been completed, and even more proposed to better constrain the source of the acceleration. I review the range of experiments, describing the current state of our understanding of the observed acceleration, and speculate about future progress in understanding Dark Energy.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Highlights H16: Highlights of Astronomy , August 2012 , pp. 17
Copyright
Copyright © International Astronomical Union 2015