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

@article{Halder2022ResponseAT,
  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},
  year={2022}
}
  • A. HalderA. 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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References

SHOWING 1-10 OF 10 REFERENCES

Dark Energy Survey Year 3 results: Cosmology with peaks using an emulator approach

We constrain the matter density Ω m and the amplitude of density fluctuations 𝜎 8 within the Λ CDM cosmological model with shear peak statistics and angular convergence power spectra using mass maps

Dark Energy Survey Year 3 results: cosmology with moments of weak lensing mass maps

We present a cosmological analysis using the second and third moments of the weak lensing mass (conver-gence) maps from the first three years of data (Y3) data of the Dark Energy Survey (DES). The

A revised density split statistic model for general filters

Context. Studying the statistical properties of the large-scale structure in the Universe with weak gravitational lensing is a prime goal of several current and forthcoming galaxy surveys. The power

VEGAS - an adaptive multi-dimensional integration program

GNU SCIENTI C LIBRARY REFERENCE MANUAL

Cosmological parameters from weak lensing power spectrum and bispectrum tomography: including the non-Gaussian errors

We re-examine a genuine power of weak lensing bispectrum tomography for constraining cosmological parameters, when combined with the power spectrum tomography, based on the Fisher information matrix

The Cosmic Linear Anisotropy Solving System (CLASS) I: Overview

This overview presents the general principles of CLASS, a new accurate Boltzmann code designed to offer a more user-friendly and flexible coding environment to cosmologists, and insists on the friendliness and flexibility aspects.

Technical report, VEGAS - an adaptivemulti-dimensional

  • JCAP,
  • 2018

The two-loop bispectrum

  • Monthly Notices of the Royal Astronomical Society,
  • 2021