PIRSA:09100079 Scientific Series Cosmology

DOI10.48660/09100079

Series: Cosmology and Gravitation

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

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

@misc{ pirsa_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},
  year = {2009},
  month = {oct},
  note = {PIRSA:09100079 see, \url{https://pirsa.org}}
}

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.

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