Now showing items 1-4 of 4

    • Galaxy Cluster Lensing Masses in Modified Lensing Potentials 

      Barreira, Alexandre; Li, Baojiu; Jennings, Elise; Merten, Julian; King, Lindsay J.; Baugh, Carlton M.; Pascoli, Silvia (2015-10-28)
      We determine the concentration-mass relation of 19 X-ray selected galaxy clusters from the Cluster Lensing and Supernova Survey with Hubble survey in theories of gravity that directly modify the lensing potential. We model ...
    • Growth of Structure in the Szekeres Class-II Inhomogeneous Cosmological Models and the Matter-Dominated Era 

      Ishak-Boushaki, Mustapha; Peel, Austin (2012-04-03)
      This study belongs to a series devoted to using the Szekeres inhomogeneous models in order to develop a theoretical framework where cosmological observations can be investigated with a wider range of possible interpretations. ...
    • Self-Calibration for Three-Point Intrinsic Alignment Autocorrelations in Weak Lensing Surveys 

      Troxel, Michael A. .; Ishak-Boushaki, Mustapha (2012-06-08)
      The weak lensing signal (cosmic shear) has been shown to be strongly contaminated by the various types of galaxy intrinsic alignment (IA) correlations, which poses a barrier to precision weak lensing measurements. The ...
    • Testing Gravity Theories Using Tensor Perturbations 

      Lin, Weikang; Ishak-Boushaki, Mustapha (American Physical Society, 2016-12-21)
      Primordial gravitational waves constitute a promising probe of the very early Universe and the laws of gravity. We study in this work changes to tensor-mode perturbations that can arise in various proposed modified gravity ...