Observational Probes of Dark Energy

Details Observational Probes of Dark Energy Observational Probes of Dark Energy

2012-01-10

arxiv.org/abs/1201.2110v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Minor corrections. 16 pages (at the page limit), including 16 figures. Proceeding paper for an invited plenary talk at Spanish

Scientific paper

The cause for the observed acceleration in the expansion of the universe is unknown, and referred to as "dark energy" for convenience. Dark energy could be an unknown energy component, or a modification of Einstein's general relativity. This dictates the measurements that are optimal in unveiling the nature of dark energy: the cosmic expansion history, and the growth history of cosmic large scale structure. I will examine Type Ia supernovae and galaxy clustering as dark energy probes, and discuss recent results and future prospects.

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