PIRSA:09030013

Video URL

https://pirsa.org/09030013

Gravitational Lensing

Dodelson, S. (2009). Gravitational Lensing. Perimeter Institute for Theoretical Physics. https://pirsa.org/09030013

Dodelson, Scott. Gravitational Lensing. Perimeter Institute for Theoretical Physics, Mar. 17, 2009, https://pirsa.org/09030013 

          @misc{ scivideos_PIRSA:09030013,
            doi = {10.48660/09030013},
            url = {https://pirsa.org/09030013},
            author = {Dodelson, Scott},
            keywords = {Cosmology},
            language = {en},
            title = {Gravitational Lensing},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2009},
            month = {mar},
            note = {PIRSA:09030013 see, \url{https://scivideos.org/index.php/pirsa/09030013}}
          }

Scott Dodelson Carnegie Mellon University

Talk numberPIRSA:09030013
DOI10.48660/09030013
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

Weak lensing has emerged as a powerful probe of fundamental physics such as dark energy and dark matter. After briefly reviewing the standard argument for the power of lensing, I present a variety of surprises: some quantities that are supposedly simple measures of cosmic shear are actually polluted by other effects and some quantities apparently unrelated to lensing are contaminated by lensing. These effects may lead to opportunities to strengthen the constraints lensing will place on dark energy.