SLAC Colloquium Series

SLAC Colloquium Series


Colloquium Detail

Event Poster

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Weak Lensing: Dark Matter, Dark Energy

Date: 2/27/2006

Bhuvnesh Jain
University of Pennsylvania

The light rays from distant galaxies are deflected by massive structures along the line of sight, causing the galaxy images to be distorted.Measurements of these distortions, known as weak lensing, provide a way of measuring the distribution of dark matter as well as the spatial geometry of the universe. I will describe the ideas underlying this approach to cosmology. With planned large imaging surveys, weak lensing is a powerful probe of dark energy. I will discuss the observational challenges ahead and recent progress in developing multiple, complementary approaches to lensing measurements.

Last update: October 03, 2013