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.
Back to the Astrophysics at Argonne page.