Point spread function calibration requirements for dark energy from cosmic shear

@article{PaulinHenriksson2008PointSF,
  title={Point spread function calibration requirements for dark energy from cosmic shear},
  author={Stephane Paulin-Henriksson and Adam Amara and Lisa Voigt and Alexandre Refregier and Sarah L. Bridle},
  journal={Astronomy and Astrophysics},
  year={2008},
  volume={484},
  pages={67-77}
}
  • Stephane Paulin-Henriksson, Adam Amara, +2 authors Sarah L. Bridle
  • Published 2008
  • Physics
  • Astronomy and Astrophysics
  • Context. The control of systematic effects when measuring background galaxy shapes is one of the main challenges for cosmic shear analyses. Aims. Study the fundamental limitations on shear accuracy due to the measurement of the point spread function (PSF) from the finite number of stars that are available. We translate the accuracy required for cosmological parameter estimation to the minimum number of stars over which the PSF must be calibrated. Methods. We characterise the error made in the… CONTINUE READING

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