Rivers of Gas I.: Unveiling The Properties of High Redshift Filaments

Abstract

At high redshift, the cosmic web is widely expected to have a significant impact on the morphologies, dynamics and star formation rates of the galaxies embedded within it, underscoring the need for a comprehensive study of the properties of such a filamentary network. With this goal in mind, we perform an analysis of high-$z$ gas and dark matter (DM) filaments around a Milky Way-like progenitor simulated with the {\sc ramses} adaptive mesh refinement (AMR) code from cosmic scales ($\sim$1 Mpc) down to the virial radius of its DM halo host ($\sim$20 kpc at $z=4$). Radial density profiles of both gas and DM filaments are found to have the same functional form, namely a plummer-like profile modified to take into account the wall within which these filaments are embedded. Measurements of the typical filament core radius $r_0$ from the simulation are consistent with that of isothermal cylinders in hydrostatic equilibrium. Such an analytic model also predicts a redshift evolution for the core radius of filaments in fair agreement with the measured value for DM $(r_0\propto (1+z{)}^{-3.18\pm 0.28})$. Gas filament cores grow as $(r_0\propto (1+z{)}^{-2.72\pm 0.26})$. In both gas and DM, temperature and vorticity sharply drop at the edge of filaments, providing an excellent way to constrain the outer filament radius. When feedback is included the gas temperature and vorticity fields are strongly perturbed, hindering such a measurement in the vicinity of the galaxy. However, the core radius of the filaments as measured from the gas density field is largely unaffected by feedback, and the median central density is only reduced by about 20%.

arXiv comment19 pages, 11 figures

References in corpus (91)

• Galactic Stellar and Substellar Initial Mass Function
• The Global Schmidt Law in Star Forming Galaxies
• The many lives of active galactic nuclei: cooling flows, black holes and the luminosities and colours of galaxies
• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• How Do Galaxies Get Their Gas?
• Introducing the Illustris Project: Simulating the coevolution of dark and visible matter in the Universe
• CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey
• Cosmological Hydrodynamics with Adaptive Mesh Refinement: a new high resolution code called RAMSES
• CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey - The Hubble Space Telescope Observations, Imaging Data Products and Mosaics
• The James Webb Space Telescope
• Galaxy Bimodality due to Cold Flows and Shock Heating
• Cold streams in early massive hot haloes as the main mode of galaxy formation
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Likelihoods and Parameters from the WMAP data
• How Filaments are Woven into the Cosmic Web
• Simba: Cosmological Simulations with Black Hole Growth and Feedback
• Virial shocks in galactic haloes?
• The Inner Structure of LambdaCDM Halos I: A Numerical Convergence Study
• First Results from the TNG50 Simulation: Galactic outflows driven by supernovae and black hole feedback
• Dancing in the dark: galactic properties trace spin swings along the cosmic web
• Molecular Gas and Star Formation in Nearby Disk Galaxies
• The persistent cosmic web and its filamentary structure I: Theory and implementation
• Evolution of the cosmic web
• A Constant Molecular Gas Depletion Time in Nearby Disk Galaxies
• The MassiveBlack-II Simulation: The Evolution of Halos and Galaxies to z~0
• Bimodal gas accretion in the Horizon-MareNostrum galaxy formation simulation
• On the onset of galactic winds in quiescent star forming galaxies
• Multiscale Phenomenology of the Cosmic Web
• Connecting the cosmic web to the spin of dark halos: implications for galaxy formation
• The History of the Baryon Budget: Cosmic Logistics in a Hierarchical Universe
• Spin alignment of dark matter haloes in filaments and walls
• Cosmic Dawn (CoDa): the First Radiation-Hydrodynamics Simulation of Reionization and Galaxy Formation in the Local Universe
• Inter-cluster filaments in a $\Lambda$CDM Universe
• Tracing Outflows and Accretion: A Bimodal Azimuthal Dependence of MgII Absorption
• Extended Lyman-alpha emission from cold accretion streams
• Galaxy spin alignment in filaments and sheets: observational evidence
• The Redshift Evolution of LCDM Halo Parameters: Concentration, Spin, and Shape
• Rigging dark halos: why is hierarchical galaxy formation consistent with the inside-out build-up of thin discs?
• Simulating cosmic ray physics on a moving mesh
• Initial Conditions for Large Cosmological Simulations
• Gas filaments of the cosmic web located around active galaxies in a proto-cluster
• First star-forming structures in fuzzy cosmic filaments
• Angular Momentum Acquisition in Galaxy Halos
• Co-planar streams, pancakes, and angular-momentum exchange in high-z disc galaxies
• Swirling around filaments: are large-scale structure vortices spinning up dark halos?
• MusE GAs FLOw and Wind (MEGAFLOW) II. A study of gas accretion around $z\approx 1$ star-forming galaxies with background quasars
• Blowing cold flows away: the impact of early AGN activity on the formation of a brightest cluster galaxy progenitor
• The Cosmic Ballet: spin and shape alignments of haloes in the cosmic web
• The splashback radius of halos from particle dynamics. II. Dependence on mass, accretion rate, redshift, and cosmology
• Simulating the physical properties of dark matter and gas inside the cosmic web
• Evidence for Cold Accretion: Primitive Gas Flowing onto a Galaxy at z~0.274
• Lighting the Universe with filaments
• CARMA Survey Toward Infrared-bright Nearby Galaxies (STING) II: Molecular Gas Star Formation Law and Depletion Time Across the Blue Sequence
• How to Quench a Dwarf Galaxy: The Impact of Inhomogeneous Reionization on Dwarf Galaxies and Cosmic Filaments
• High Angular Momentum Halo Gas: a Feedback and Code-Independent Prediction of LCDM
• The impact of supernovae driven winds on stream-fed protogalaxies
• How Do Galaxies Get Their Gas?
• And yet it flips: connecting galactic spin and the cosmic web
• Properties of gas phases around cosmic filaments at z=0 in the Illustris-TNG simulation
• Cold Filamentary Accretion and the Formation of Metal Poor Globular Clusters and Halo Stars
• Observational Requirements for Lyman-alpha Forest Tomographic Mapping of Large-Scale Structure at z ~ 2
• Instability of Supersonic Cold Streams Feeding Galaxies I: Linear Kelvin-Helmholtz Instability with Body Modes
• The survival of interstellar clouds against Kelvin-Helmholtz instabilities
• Impact of Lyman alpha pressure on metal-poor dwarf galaxies
• Instability of Supersonic Cold Streams Feeding Galaxies III: Kelvin-Helmholtz Instability in Three Dimensions
• Discovery Of Cold, Pristine Gas Possibly Accreting Onto An Overdensity Of Star-Forming Galaxies At Redshift z ~ 1.6
• Spatially Resolved Gas Kinematics within a Ly$\alpha$ Nebula: Evidence for Large-scale Rotation
• Alignment between filaments and galaxy spins from the MaNGA integral-field survey
• The angular momentum of baryons and dark matter halos revisited
• Detecting Galaxy-Filament Alignments in the Sloan Digital Sky Survey III
• Evolution of cosmic filaments and of their galaxy population from MHD cosmological simulations
• Properties of Cosmological Filaments extracted from Eulerian Simulations
• Are Cosmological Gas Accretion Streams Multiphase and Turbulent?
• Stacking the Cosmic Web in Fluorescent Lyman alpha Emission with MUSE
• Detection strategies for the first supernovae with JWST
• Instability of Supersonic Cold Streams Feeding Galaxies II. Nonlinear Evolution of Surface and Body Modes of Kelvin-Helmholtz Instability
• The Role of Cold Flows and Reservoirs in Galaxy Formation With Strong Feedback
• Ly$\alpha$ view around a z=2.84 hyperluminous QSO at a node of the cosmic web
• On the Kelvin-Helmholtz instability with smooth initial conditions -- Linear theory and simulations
• Angular momentum transfer to a Milky Way disk at high redshift
• Accurate tracer particles of baryon dynamics in the adaptive mesh refinement code Ramses
• Local stability of a gravitating filament: a dispersion relation
• Resolving 3D Disk Orientation using High-Resolution Images: New Constraints on Circumgalactic Gas Inflows
• Simulating MOS science on the ELT: Ly$\alpha$ forest tomography
• Can intrinsic alignments of elongated low-mass galaxies be used to map the cosmic web at high redshift?
• Filaments and sheets of the warm-hot intergalactic medium
• The IllustrisTNG Simulations: Public Data Release
• Lyman alpha emission from the first galaxies: Signatures of accretion and infall in the presence of line trapping
• Detecting the neutral IGM in filaments with the SKA
• Cosmic Web: Origin and Observables
• Detecting the Cosmic Web: Lyα Emission from Simulated Filaments at z=3
• Keck/OSIRIS IFU Detection of a z $\sim$ 3 Damped Lyman Alpha Host Galaxy

Cited by in corpus (19)

• Efficient Formation of Massive Galaxies at Cosmic Dawn by Feedback-Free Starbursts
• Properties of gas phases around cosmic filaments at z=0 in the Illustris-TNG simulation
• Relative distribution of dark matter, gas, and stars around cosmic filaments in the IllustrisTNG simulation
• The effect of cosmic web filaments on galaxy evolution
• Flows around galaxies. I. The dependency of galaxy connectivity on cosmic environments and effects on the star-formation rate
• Thermal Instabilities and Shattering in the High-Redshift WHIM: Convergence Criteria and Implications for Low-Metallicity Strong HI Absorbers
• On the Cosmic Web Elongation in Fuzzy Dark Matter Cosmologies: Effects on Density Profiles, Shapes and Alignments of Halos
• Quenching in Cosmic Sheets: Tracing the Impact of Large Scale Structure Collapse on the Evolution of Dwarf Galaxies
• Stellar angular momentum can be controlled from cosmological initial conditions
• Tracking Halo Orbits and Their Mass Evolution around Large-scale Filaments
• Cosmic Web Dissection in Fuzzy Dark Matter Cosmologies
• The large-scale structure around the Fornax-Eridanus Complex
• Dissecting a miniature universe: A multi-wavelength view of galaxy quenching in the Shapley supercluster
• The Power of the Cosmic Web
• Cold-mode and hot-mode accretion in galaxy formation: an entropy approach
• Interference in Fuzzy Dark Matter Filaments: Idealised Models and Statistics
• Dissecting Cosmological Filaments at High Redshifts: Emergence of Spaghetti-type Flow Inside DM Haloes
• A 15 Mpc rotating galaxy filament at redshift z = 0.032
• The galaxy-environment connection revealed by constrained simulations