The FLAMINGO project: Baryonic impact on weak gravitational lensing convergence peak counts

Abstract

Weak gravitational lensing convergence peaks, the local maxima in weak lensing convergence maps, have been shown to contain valuable cosmological information complementary to commonly used two-point statistics. To exploit the full power of weak lensing for cosmology, we must model baryonic feedback processes because these reshape the matter distribution on non-linear and mildly non-linear scales. We study the impact of baryonic physics on the number density of weak lensing peaks using the FLAMINGO cosmological hydrodynamical simulation suite. We generate ray-traced full-sky convergence maps mimicking the characteristics of a Stage IV weak lensing survey. We compare the number densities of peaks in simulations that have been calibrated to reproduce the observed galaxy mass function and cluster gas fraction or to match a shifted version of these, and that use either thermally driven or jet AGN feedback. We show that the differences induced by realistic baryonic feedback prescriptions (typically $5-30\%$ for $\kappa =0.1-0.4$) are smaller than those induced by reasonable variations in cosmological parameters ($20-60\%$ for $\kappa =0.1-0.4$) but must be modeled carefully to obtain unbiased results. The reasons behind these differences can be understood by considering the impact of feedback on halo masses, or by considering the impact of different cosmological parameters on the halo mass function. Our analysis demonstrates that, for the range of models we investigated, the baryonic suppression is insensitive to changes in cosmology up to $\kappa \approx 0.4$ and that the higher $\kappa$ regime is dominated by Poisson noise and cosmic variance.

arXiv comment18 pages, 12 figures (including the appendix), Accepted for publication in MNRAS

References in corpus (98)

• HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
• Weak Gravitational Lensing
• The Cosmic Linear Anisotropy Solving System (CLASS) II: Approximation schemes
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 10 and 11 galaxy samples
• First results from the IllustrisTNG simulations: matter and galaxy clustering
• Toward a halo mass function for precision cosmology: the limits of universality
• UniverseMachine: The Correlation between Galaxy Growth and Dark Matter Halo Assembly from z=0-10
• Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
• Massive neutrinos and cosmology
• KiDS-450: Cosmological parameter constraints from tomographic weak gravitational lensing
• Cosmological simulations of the growth of supermassive black holes and feedback from active galactic nuclei: method and tests
• KiDS-1000 Cosmology: Cosmic shear constraints and comparison between two point statistics
• Chemical enrichment in cosmological, smoothed particle hydrodynamics simulations
• On the relation between the Schmidt and Kennicutt-Schmidt star formation laws and its implications for numerical simulations
• Cosmology with cosmic shear observations: a review
• The BAHAMAS project: Calibrated hydrodynamical simulations for large-scale structure cosmology
• The $H_0$ Olympics: A fair ranking of proposed models
• Simulating galactic outflows with kinetic supernova feedback
• The effects of galaxy formation on the matter power spectrum: A challenge for precision cosmology
• Weak Lensing of the CMB: A Harmonic Approach
• Dark Energy Survey Year 3 Results: Cosmology from Cosmic Shear and Robustness to Data Calibration
• Extended Limber Approximation
• Weak Gravitational Lensing and its Cosmological Applications
• Ray-tracing through the Millennium Simulation: Born corrections and lens-lens coupling in cosmic shear and galaxy-galaxy lensing
• Ray Tracing Simulations of Weak Lensing by Large-Scale Structure
• Quantifying the effect of baryon physics on weak lensing tomography
• The fourth data release of the Kilo-Degree Survey: ugri imaging and nine-band optical-IR photometry over 1000 square degrees
• Cosmological constraints from cosmic shear two-point correlation functions with HSC survey first-year data
• First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters
• The FLAMINGO project: cosmological hydrodynamical simulations for large-scale structure and galaxy cluster surveys
• Halo mass function: Baryon impact, fitting formulae and implications for cluster cosmology
• Quantifying baryon effects on the matter power spectrum and the weak lensing shear correlation
• Cosmology with the shear-peak statistics
• The impact of baryons on the matter power spectrum from the Horizon-AGN cosmological hydrodynamical simulation
• Modeling jet and outflow feedback during star cluster formation
• The impact of galaxy formation on the total mass, mass profile and abundance of haloes
• The BAHAMAS project: the CMB--large-scale structure tension and the roles of massive neutrinos and galaxy formation
• Exploring the effects of galaxy formation on matter clustering through a library of simulation power spectra
• Cosmology Constraints from the Weak Lensing Peak Counts and the Power Spectrum in CFHTLenS
• The MillenniumTNG Project: The hydrodynamical full physics simulation and a first look at its galaxy clusters
• Effect of baryonic feedback on two- and three-point shear statistics: prospects for detection and improved modelling
• Probing Cosmology with Weak Lensing Peak Counts
• The Aemulus Project II: Emulating the Halo Mass Function
• MassiveNuS: Cosmological Massive Neutrino Simulations
• Cluster Mass Calibration at High Redshift: HST Weak Lensing Analysis of 13 Distant Galaxy Clusters from the South Pole Telescope Sunyaev-Zel'dovich Survey
• Probing Cosmology with Weak Lensing Minkowski Functionals
• Impact of post-Born lensing on the CMB
• The effects of baryons on the halo mass function
• Radiative cooling rates, ion fractions, molecule abundances and line emissivities including self-shielding and both local and metagalactic radiation fields
• Cosmological Information in Weak Lensing Peaks
• Accurate initial conditions for cosmological N-body simulations: Minimizing truncation and discreteness errors
• Modelling the large scale structure of the Universe as a function of cosmology and baryonic physics
• Consistent lensing and clustering in a low-$S_8$ Universe with BOSS, DES Year 3, HSC Year 1 and KiDS-1000
• Sphenix: Smoothed Particle Hydrodynamics for the next generation of galaxy formation simulations
• Baryonic effects for weak lensing. Part I. Power spectrum and covariance matrix
• Cosmology with Minkowski functionals and moments of the weak lensing convergence field
• The Effect of Gas Physics on the Halo Mass Function
• The separate and combined effects of baryon physics and neutrino free-streaming on large-scale structure
• Euclid Preparation IV. Impact of undetected galaxies on weak-lensing shear measurements
• CMB weak-lensing beyond the Born approximation: a numerical approach
• The halo model for cosmology: a pedagogical review
• An optimal nonlinear method for simulating relic neutrinos
• On the validity of the Born approximation for beyond-Gaussian weak lensing observables
• Cosmological Forecast for non-Gaussian Statistics in large-scale weak Lensing Surveys
• Constraining neutrino mass with tomographic weak lensing peak counts
• Fast Spherical Harmonic Analysis: a quick algorithm for generating and/or inverting full sky, high resolution CMB Anisotropy maps
• Euclid Preparation. XXVIII. Forecasts for ten different higher-order weak lensing statistics
• The Weak Lensing Bispectrum
• Baryon impact on weak lensing peaks and power spectrum: low-bias statistics and self-calibration in future surveys
• Fitting the nonlinear matter bispectrum by the Halofit approach
• SP(k) -- A hydrodynamical simulation-based model for the impact of baryon physics on the non-linear matter power spectrum
• Spin-driven jet feedback in idealised simulations of galaxy groups and clusters
• Probing cosmology with weak lensing selected clusters I: Halo approach and all-sky simulations
• The Origin of Weak Lensing Convergence Peaks
• Stochastic Homology of Gaussian vs. non-Gaussian Random Fields: Graphs towards Betti Numbers and Persistence Diagrams
• Weak Lensing Minima and Peaks: Cosmological Constraints and the Impact of Baryons
• The Accuracy of Weak Lensing Simulations
• $\kappa$TNG: Effect of Baryonic Processes on Weak Lensing with IllustrisTNG Simulations
• A thermal-kinetic subgrid model for supernova feedback in simulations of galaxy formation
• Constraining cosmology with weak lensing voids
• Effects of baryons on weak lensing peak statistics
• The MillenniumTNG Project: The impact of baryons and massive neutrinos on high-resolution weak gravitational lensing convergence maps
• Higher-order initial conditions with massive neutrinos
• MultiDarkLens Simulations: weak lensing light-cones and data base presentation
• Scale dependence of galaxy biasing investigated by weak gravitational lensing: An assessment using semi-analytic galaxies and simulated lensing data
• Weak lensing in the Horizon-AGN simulation lightcone. Small scale baryonic effects
• Weak lensing by galaxy troughs with modified gravity
• The Impact of Baryons on Cosmological Inference from Weak Lensing Statistics
• Spherical Bayesian mass-mapping with uncertainties: full sky observations on the celestial sphere
• Weak lensing peak statistics in the era of large scale cosmological surveys
• The impact of baryonic physics and massive neutrinos on weak lensing peak statistics
• Generalized shear-ratio tests: A new relation between cosmological distances, and a diagnostic for a redshift-dependent multiplicative bias in shear measurements
• Cosmological forecasts with the clustering of weak lensing peaks
• Optimizing simulation parameters for weak lensing analyses involving non-Gaussian observables
• Comparing weak lensing peak counts in baryonic correction models to hydrodynamical simulations
• Effects of galaxy intrinsic alignment on weak lensing peak statistics
• Cosmological Constraints from Weak Lensing Peaks: Can Halo Models Accurately Predict Peak Counts?
• Galaxy cluster aperture masses are more robust to baryonic effects than 3D halo masses

Cited by in corpus (10)

• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• Impact of baryonic feedback on HSC Y1 weak lensing non-Gaussian statistics
• Validating the clustering predictions of empirical models with the FLAMINGO simulations
• Box Replication Effects in Weak Lensing Light-cone Construction
• Map-level baryonification: unified treatment of weak lensing two-point and higher-order statistics
• Stage IV baryonic feedback correction for non-Gaussianity inference
• The FLAMINGO project: cosmology with the redshift dependence of weak gravitational lensing peaks
• Mapping luminous and dark matter in the Universe
• The FLAMINGO simulations data release
• Ray-traced weak lensing convergence in screened modified gravity theories