The MillenniumTNG Project: The impact of baryons and massive neutrinos on high-resolution weak gravitational lensing convergence maps

Abstract

We study weak gravitational lensing convergence maps produced from the MillenniumTNG (MTNG) simulations by direct projection of the mass distribution on the past backwards lightcone of a fiducial observer. We explore the lensing maps over a large dynamic range in simulation mass and angular resolution, allowing us to establish a clear assessment of numerical convergence. By comparing full physics hydrodynamical simulations with corresponding dark-matter-only runs we quantify the impact of baryonic physics on the most important weak lensing statistics. Likewise, we predict the impact of massive neutrinos reliably far into the non-linear regime. We also demonstrate that the "fixed & paired" variance suppression technique increases the statistical robustness of the simulation predictions on large scales not only for time slices but also for continuously output lightcone data. We find that both baryonic and neutrino effects substantially impact weak lensing shear measurements, with the latter dominating over the former on large angular scales. Thus, both effects must explicitly be included to obtain sufficiently accurate predictions for stage IV lensing surveys. Reassuringly, our results agree accurately with other simulation results where available, supporting the promise of simulation modelling for precision cosmology far into the non-linear regime.

15 pages, 10 figures, comments welcome

References in corpus (26)

• Simulating galaxy formation with black hole driven thermal and kinetic feedback
• Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
• Massive neutrinos and cosmology
• Wide-Field InfrarRed Survey Telescope-Astrophysics Focused Telescope Assets WFIRST-AFTA 2015 Report
• KiDS-1000 Cosmology: Cosmic shear constraints and comparison between two point statistics
• KiDS-1000 Cosmology: Multi-probe weak gravitational lensing and spectroscopic galaxy clustering constraints
• Extended Limber Approximation
• Simulating cosmic structure formation with the GADGET-4 code
• Third Data Release of the Hyper Suprime-Cam Subaru Strategic Program
• Full-sky Gravitational Lensing Simulation for Large-area Galaxy Surveys and Cosmic Microwave Background Experiments
• The MillenniumTNG Project: The hydrodynamical full physics simulation and a first look at its galaxy clusters
• The MillenniumTNG Project: The galaxy population at $z\ge 8$
• The MillenniumTNG Project: High-precision predictions for matter clustering and halo statistics
• An optimal nonlinear method for simulating relic neutrinos
• CMB Lensing Beyond the Power Spectrum: Cosmological Constraints from the One-Point PDF and Peak Counts
• The MillenniumTNG Project: An improved two-halo model for the galaxy-halo connection of red and blue galaxies
• Accurate Analytic Model for the Weak Lensing Convergence One-Point Probability Distribution Function and its Auto-Covariance
• $\kappa$TNG: Effect of Baryonic Processes on Weak Lensing with IllustrisTNG Simulations
• The MillenniumTNG Project: Intrinsic alignments of galaxies and halos
• The MillenniumTNG Project: Refining the one-halo model of red and blue galaxies at different redshifts
• The MillenniumTNG Project: Inferring cosmology from galaxy clustering with accelerated N-body scaling and subhalo abundance matching
• Weak lensing in the Horizon-AGN simulation lightcone. Small scale baryonic effects
• The MillenniumTNG Project: The large-scale clustering of galaxies
• Euclid: Modelling massive neutrinos in cosmology -- a code comparison
• Cosmological forecasts with the clustering of weak lensing peaks
• The integrated angular bispectrum of weak lensing

Cited by in corpus (15)

• Cosmology from weak lensing peaks and minima with Subaru Hyper Suprime-Cam survey first-year data
• The MillenniumTNG Project: Semi-analytic galaxy formation models on the past lightcone
• The impact of baryons on the internal structure of dark matter haloes from dwarf galaxies to superclusters in the redshift range 0<z<7
• The FLAMINGO project: Baryonic impact on weak gravitational lensing convergence peak counts
• TDCOSMO XV: Population Analysis of Lines of Sight of 25 Strong Galaxy-Galaxy Lenses with Extreme Value Statistics
• Painting baryons onto N-body simulations of galaxy clusters with image-to-image deep learning
• Investigating the galaxy-halo connection of DESI Emission-Line Galaxies with SHAMe-SF
• Box Replication Effects in Weak Lensing Light-cone Construction
• Baryonification extended to thermal Sunyaev Zeldovich
• Massive $\nu$s through the CNN lens: interpreting the field-level neutrino mass information in weak lensing
• Impact of weak lensing on bright standard siren analyses
• Neural style transfer of weak lensing mass maps
• Fast Generation of Weak Lensing Maps in Modified Gravity with COLA
• Differences in baryonic and dark matter scaling relations of galaxy clusters: A comparison between IllustrisTNG simulations and observations
• Non-linear infusion of intrinsic alignment and source clustering: impact on non-Gaussian cosmic shear statistics