PIRSA:09100079

Video URL

https://pirsa.org/09100079

Testing General Relativity with Weak Gravitational Lensing

Vanderveld, A. (2009). Testing General Relativity with Weak Gravitational Lensing. Perimeter Institute for Theoretical Physics. https://pirsa.org/09100079

Vanderveld, Ali. Testing General Relativity with Weak Gravitational Lensing. Perimeter Institute for Theoretical Physics, Oct. 27, 2009, https://pirsa.org/09100079 

          @misc{ scivideos_PIRSA:09100079,
            doi = {10.48660/09100079},
            url = {https://pirsa.org/09100079},
            author = {Vanderveld, Ali},
            keywords = {Cosmology},
            language = {en},
            title = {Testing General Relativity with Weak Gravitational Lensing},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2009},
            month = {oct},
            note = {PIRSA:09100079 see, \url{https://scivideos.org/pirsa/09100079}}
          }

Ali Vanderveld Cornell University

Talk numberPIRSA:09100079
DOI10.48660/09100079
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

Weak gravitational lensing is a powerful probe of modifications of General Relativity on cosmological scales, since such modifications can affect both how matter produces gravitational potential wells and how photons move within these wells. I will discuss alternative theories of gravitation and how we may constrain such theories using weak lensing observables, including those that could be obtained with the balloon-borne High Altitude Lensing Observatory (HALO). I will also discuss the "parametrized-post-Friedmannian" approach for obtaining model-independent constraints, in which new parameters are introduced to characterize the departure from General Relativity on large scales.