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Panofsky Fellowship Seminar
Unveiling dark energy and dark matter with weak gravitational lensing
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America/Los_Angeles
48/1-112C/D - Redwood C/D (SLAC)
48/1-112C/D - Redwood C/D
SLAC
45
Description
The physics of dark energy and dark matter are a key unknown of present natural science. Their effect on the growth of structures on the scale of galaxies and larger, forming in our Universe over the course of billions of years, is the most promising probe of these physics. The gravity of any mass concentration deflects the light of distant sources on its way to us, allowing direct measurements of structure with an effect called weak gravitational lensing. In my talk, I will present results from gravitational lensing in the Dark Energy Survey (DES) and give an outlook to its successor experiment led by SLAC, the Large Synoptic Survey Telescope (LSST). I will focus both on the challenge of highly accurate measurements with the unprecedented data sets DES and LSST are providing, and on the opportunity of using multiple different views of structure to test predictions of our theory of gravity, dark energy, and dark matter. With progress on both aspects, LSST will be able to deliver on its promise as a key probe of the dark universe.
