Dragan Huterer

University of Chicago and Kavli Institute for Cosmological Physics

Cosmological Probes of Dark Energy in the Universe

One of the great mysteries of modern cosmology is the origin and nature of dark energy - a smooth component that contributes about 70% of the total energy density in the universe and causes its accelerated expansion. Although discovered less than a decade ago, dark energy domination has recently been confirmed via several independent cosmological probes; nevertheless, there are no good theoretical ideas as to its physical provenance. In this talk I describe the current and future efforts to measure the macroscopic properties of dark energy. I particularly concentrate on type Ia supernovae and weak gravitational lensing, describing the recent progress and upcoming challenges. Finally, I talk about the SNAP space telescope and its prospects to help us understand the nature of dark energy.

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