The effect of imperfect models of point spread function anisotropy on cosmic shear measurements

  title={The effect of imperfect models of point spread function anisotropy on cosmic shear measurements},
  author={Henk Hoekstra},
  journal={Monthly Notices of the Royal Astronomical Society},
  • H. Hoekstra
  • Published 4 June 2003
  • Physics
  • Monthly Notices of the Royal Astronomical Society
Current measurements of the weak lensing signal induced by large-scale structure provide useful constraints on a range of cosmological parameters. However, the ultimate success of this technique depends on the accuracy with which one corrects for the effect of the point spread function (PSF), in particular the correction for the PSF anisotropy. With upcoming large weak lensing surveys, a proper understanding of residual systematics is necessary. In this paper, we examine the importance of the… 

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