Effects of Baryonic Feedback on the Cosmic Web

Abstract

We study the effect of baryons on the cosmic web -- halos, filaments, walls, and voids. To do so, we apply a modified version of NEXUS, a cosmic web morphological analysis algorithm, to the IllustrisTNG simulations. We find that halos lose more than $10\%$ of their mass due to baryons, mostly to filaments and a small portion to walls and voids. However, the mass transfer does not significantly shift the boundaries of structures, leaving the volume fractions of the cosmic structures largely unaffected. We quantify the effects of baryonic feedback on the power spectrum and the probability density function (PDF) of the density field for individual cosmic structures. For the power spectrum, most suppression due to feedback can be accounted for by including $M\ge 10^{12}{M}_{\odot }/h$ halos, without considering other cosmic structures. However, when examining the PDF of the density field, we find nearly $100\%$ suppression of the emptiest regions and $10\%$-level effects (boost or suppression) in the remaining regions of filaments, walls, and voids. Our results indicate the importance of modeling the effects of baryons in the whole cosmic web, not just halos, for cosmological analysis beyond two-point statistics or field-based inferences.

arXiv comment7 pages, 4 figures

References in corpus (60)

• E pur si muove: Galiliean-invariant cosmological hydrodynamical simulations on a moving mesh
• First results from the IllustrisTNG simulations: matter and galaxy clustering
• First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies
• First results from the IllustrisTNG simulations: the galaxy color bimodality
• First results from the IllustrisTNG simulations: A tale of two elements -- chemical evolution of magnesium and europium
• How Filaments are Woven into the Cosmic Web
• Analytic model for galaxy and dark matter clustering
• Halo occupation numbers and galaxy bias
• The persistent cosmic web and its filamentary structure I: Theory and implementation
• The BAHAMAS project: Calibrated hydrodynamical simulations for large-scale structure cosmology
• Evolution of the cosmic web
• An accurate halo model for fitting non-linear cosmological power spectra and baryonic feedback models
• Effects of Baryons and Dissipation on the Matter Power Spectrum
• HMcode-2020: Improved modelling of non-linear cosmological power spectra with baryonic feedback
• Quantifying the effect of baryon physics on weak lensing tomography
• The CAMELS project: Cosmology and Astrophysics with MachinE Learning Simulations
• A Dynamical Classification of the Cosmic Web
• Multiscale Phenomenology of the Cosmic Web
• NEXUS: Tracing the Cosmic Web Connection
• AbacusSummit: A Massive Set of High-Accuracy, High-Resolution $N$-Body Simulations
• A new method to quantify the effects of baryons on the matter power spectrum
• Baryons in the CosmicWeb of IllustrisTNG - I: Gas in Knots, Filaments, Sheets and Voids
• The BACCO Simulation Project: Exploiting the full power of large-scale structure for cosmology
• Quantifying baryon effects on the matter power spectrum and the weak lensing shear correlation
• The impact of galaxy formation on the total mass, mass profile and abundance of haloes
• Modelling baryonic feedback for survey cosmology
• The darkness that shaped the void: dark energy and cosmic voids
• The Cosmic Web, Multi-Stream Flows, and Tessellations
• Massive Neutrinos Leave Fingerprints on Cosmic Voids
• MassiveNuS: Cosmological Massive Neutrino Simulations
• Modeling baryonic physics in future weak lensing surveys
• Fisher for complements: Extracting cosmology and neutrino mass from the counts-in-cells PDF
• Accounting for baryonic effects in cosmic shear tomography: Determining a minimal set of nuisance parameters using PCA
• Morphology of the supercluster-void network in LCDM cosmology
• Detecting Neutrino Mass by Combining Matter Clustering, Halos, and Voids
• Precision cosmology with voids in the final BOSS data
• Constraining neutrino mass with tomographic weak lensing one-point probability distribution function and power spectrum
• Cosmological Simulations for Combined-Probe Analyses: Covariance and Neighbour-Exclusion Bias
• Nuw CDM cosmology from the weak lensing convergence PDF
• On the universality of void density profiles
• Primordial non-Gaussianity without tails -- how to measure fNL with the bulk of the density PDF
• Simultaneous modelling of matter power spectrum and bispectrum in the presence of baryons
• Weak Lensing Reveals a Tight Connection Between Dark Matter Halo Mass and the Distribution of Stellar Mass in Massive Galaxies
• CMB Lensing Beyond the Power Spectrum: Cosmological Constraints from the One-Point PDF and Peak Counts
• Cosmological constraints from the convergence 1-point probability distribution
• Weak Lensing Minima and Peaks: Cosmological Constraints and the Impact of Baryons
• Learning effective physical laws for generating cosmological hydrodynamics with Lagrangian Deep Learning
• Properties of Cosmological Filaments extracted from Eulerian Simulations
• Weak lensing by voids in weak lensing maps
• Accurate Analytic Model for the Weak Lensing Convergence One-Point Probability Distribution Function and its Auto-Covariance
• A gradient based method for modeling baryons and matter in halos of fast simulations
• Simultaneously constraining cosmology and baryonic physics via deep learning from weak lensing
• The impact of baryons on the sensitivity of dark energy measurements
• Probability distribution function of the aperture mass field with large deviation theory
• The Size Distribution of Void Filaments in a LCDM Cosmology
• An Accurate Analytic Model for the Thermal Sunyaev-Zel'dovich One-Point PDF
• Baryonic effects in cosmic shear tomography: PCA parametrization and importance of extreme baryonic models
• Comparing weak lensing peak counts in baryonic correction models to hydrodynamical simulations
• The Variance and Covariance of Counts-in-Cells Probabilities
• Covariances of density probability distribution functions. Lessons from hierarchical models

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• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• The boundary of cosmic filaments
• The Dispersion Measure Contributions of the Cosmic Web
• Impact of baryonic feedback on HSC Y1 weak lensing non-Gaussian statistics
• How do baryonic effects on the cosmic matter distribution vary with scale and local density environment?
• Quasi-2D Weak Lensing Cosmological Constraints Using the PDF-SYM method
• The Power of the Cosmic Web
• Cosmological constraints from HSC Y1 lensing convergence PDF
• Disentangling the Halo: Joint Model for Measurements of the Kinetic Sunyaev-Zeldovich Effect and Galaxy-Galaxy Lensing
• Principal Components for Model-Agnostic Modified Gravity with 3x2pt
• Marked statistics across the cosmic web: Environmental dependent clustering in modified gravity simulations