Response approach to the integrated shear 3-point correlation function: the impact of baryonic effects on small scales

  title={Response approach to the integrated shear 3-point correlation function: the impact of baryonic effects on small scales},
  author={Anik Halder and Alexandre Barreira},
  journal={Monthly Notices of the Royal Astronomical Society},
  • A. Halder, A. Barreira
  • Published 14 January 2022
  • Physics
  • Monthly Notices of the Royal Astronomical Society
The integrated shear 3-point correlation function ζ± is a higher-order statistic of the cosmic shear field that describes the modulation of the 2-point correlation function ξ± by long-wavelength features in the field. Here, we introduce a new theoretical model to calculate ζ± that is accurate on small angular scales, and that allows to take baryonic feedback effects into account. Our model builds on the realization that the small-scale ζ± is dominated by the nonlinear matter bispectrum in the… 
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