The Effect Of AGN Heating On The Low-Redshift Lyα Forest

Abstract

We investigate the effects of AGN heating and the ultraviolet background on the low-redshift Lyman-$\alpha$ forest column density distribution (CDD) using the Illustris simulation. We show that Illustris reproduces observations at $z=0.1$ in the column density range $10^{12.5}-10^{13.5}$cm${}^{-2}$, relevant for the "photon underproduction crisis." We attribute this to the inclusion of AGN feedback, which changes the gas distribution so as to mimic the effect of extra photons, as well as the use of the Faucher-Giguère ultraviolet background, which is more ionizing at $z=0.1$ than the Haardt & Madau background previously considered. We show that the difference between simulations run with smoothed particle hydrodynamics and simulations using a moving mesh is small in this column density range but can be more significant at larger column densities. We further consider the effect of supernova feedback, Voigt profile fitting and finite resolution, all of which we show to have little influence on the CDD. Finally, we identify a discrepancy between our simulations and observations at column densities $10^{14}-10^{16}$cm${}^{-2}$, where Illustris produces too few absorbers, which suggests the AGN feedback model should be further refined. Since the "photon underproduction crisis" primarily affects lower column density systems, we conclude that AGN feedback and standard ionizing background models can resolve the crisis.

References in corpus (60)

• The cosmological simulation code GADGET-2
• Energy input from quasars regulates the growth and activity of black holes and their host galaxies
• E pur si muove: Galiliean-invariant cosmological hydrodynamical simulations on a moving mesh
• Cosmological SPH simulations: A hybrid multi-phase model for star formation
• Modeling feedback from stars and black holes in galaxy mergers
• Radiative Transfer in a Clumpy Universe: II. The Utraviolet Extragalactic Background
• Properties of galaxies reproduced by a hydrodynamic simulation
• Simulating galaxy formation with black hole driven thermal and kinetic feedback
• Radiative transfer in a clumpy universe: IV. New synthesis models of the cosmic UV/X-ray background
• Introducing the Illustris Project: the evolution of galaxy populations across cosmic time
• Cosmological Simulations with TreeSPH
• A model for cosmological simulations of galaxy formation physics
• A unified model for AGN feedback in cosmological simulations of structure formation
• A New Calculation of the Ionizing Background Spectrum and the Effects of HeII Reionization
• The Illustris simulation: the evolving population of black holes across cosmic time
• Cosmological Simulations of Intergalactic Medium Enrichment from Galactic Outflows
• Mass, Metal, and Energy Feedback in Cosmological Simulations
• The Illustris Simulation: Public Data Release
• On the evolution of the HI column density distribution in cosmological simulations
• The Low Redshift Lyman Alpha Forest in Cold Dark Matter Cosmologies
• The effects of galaxy formation on the matter power spectrum: A challenge for precision cosmology
• Gravitational Collapse of Small-Scale Structure as the Origin of the Lyman Alpha Forest
• The Lyman-alpha Forest in the Cold Dark Matter Model
• Recovery of the Power Spectrum of Mass Fluctuations from Observations of the Lyman-alpha Forest
• The Opacity of the Lyman Alpha Forest and Implications for Omega_{baryon} and the Ionizing Background
• The Linear Theory Power Spectrum from the Lyman-alpha Forest in the Sloan Digital Sky Survey
• The Lyman Alpha Forest from Gravitational Collapse in the CDM+Lambda Model
• Detection of Extended He II Reionization in the Temperature Evolution of the Intergalactic Medium
• Absorption line systems in simulated galaxies fed by cold streams
• A Multi-Species Model for Hydrogen and Helium Absorbers in Lyman-Alpha Forest Clouds
• Evolution of the Intergalactic Opacity: Implications for the Ionizing Background, Cosmic Star Formation, and Quasar Activity
• A Direct Precision Measurement of the Intergalactic Lyman-alpha Opacity at 2<z<4.2
• Damped Lyman Alpha Systems in Galaxy Formation Simulations
• Density Studies of MHD Interstellar Turbulence: Statistical Moments, Correlations and Bispectrum
• Moving mesh cosmology: numerical techniques and global statistics
• An HST/COS Survey of the Low-Redshift IGM. I. Survey, Methodology, & Overall Results
• The Small Covering Factor of Cold Accretion Streams
• Shaping the galaxy stellar mass function with supernova- and AGN-driven winds
• Neutral hydrogen in galaxy halos at the peak of the cosmic star formation history
• Moving mesh cosmology: the hydrodynamics of galaxy formation
• The properties of satellite galaxies in simulations of galaxy formation
• Physical Properties, Baryon Content, and Evolution of the LyαForest: New Insights from High Resolution Observations at z < 0.4
• Moving mesh cosmology: characteristics of galaxies and haloes
• Damped Lyman-alpha absorbers as a probe of stellar feedback
• Voigt-Profile Analysis of the Lyman-alpha Forest in a Cold Dark Matter Universe
• The Impact of Galactic Feedback on the Circumgalactic Medium
• The thermal history of the intergalactic medium down to redshift z=1.5: a new curvature measurement
• A Stellar Feedback Origin for Neutral Hydrogen in High-Redshift Quasar-Mass Halos
• The Photon Underproduction Crisis
• Cosmological and astrophysical constraints from the Lyman-alpha forest flux probability distribution function
• Reproducing the Kinematics of Damped Lyman-alpha Systems
• Photon underproduction crisis: Are QSOs sufficient to resolve it?
• The Metagalactic Ionizing Background: A Crisis in UV Photon Production or Incorrect Galaxy Escape Fractions?
• The Cosmological Impact of Luminous TeV Blazars II: Rewriting the Thermal History of the Intergalactic Medium
• The Lyman-alpha forest in a blazar-heated Universe
• Intergalactic Lyman continuum photon budget in the past 5 billion years
• Moving mesh cosmology: properties of neutral hydrogen in absorption
• Directly imaging damped Ly-alpha galaxies at z>2. II: Imaging and spectroscopic observations of 32 quasar fields
• The role of the artificial conductivity in SPH simulations of galaxy clusters: effects on the ICM properties
• A Chandra Study of Radial Temperature Profiles of the Intra-Cluster Medium in 50 Galaxy Clusters

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• Evolution of the AGN UV luminosity function from redshift 7.5
• A Cosmic UV/X-ray Background Model Update
• Quasar-Mode Feedback in Nearby Type 1 Quasars: Ubiquitous Kiloparsec-Scale Outflows and Correlations with Black Hole Properties
• New synthesis models of consistent extragalactic background light over cosmic time
• Atomic and molecular gas in IllustrisTNG galaxies at low redshift
• The CAMELS project: public data release
• The Power Spectrum of the Lyman-$\alpha$ Forest at z < 0.5
• Jet Feedback and the Photon Underproduction Crisis in Simba
• Simba: The average properties of the circumgalactic medium of $2\le z\le 3$ quasars are determined primarily by stellar feedback
• The effect of stellar and AGN feedback on the low redshift Lyman-$\alpha$ forest in the Sherwood simulation suite
• Limits on non-canonical heating and turbulence in the intergalactic medium from the low redshift Lyman-alpha forest
• Efficient long-range AGN feedback affects the low redshift Lyman-$\alpha$ forest
• Efficient adiabatic hydrodynamical simulations of the high-redshift intergalactic medium
• The low redshift Lyman-$\alpha$ Forest as a constraint for models of AGN feedback
• The evolution of the low-density HI intergalactic medium from z=3.6 to 0: Data, transmitted flux and HI column density
• Probing the Dependence of the Intergalactic Medium on Large Scale Environment Using the Low Redshift Lyman Alpha Forest
• Possible evidence for a large-scale enhancement in the Lyman-$\alpha$ forest power spectrum at redshift $\text{z}\ge 4$
• Searching for the shadows of giants: characterising protoclusters with line of sight Lyman-α absorption
• Automatic Kalman-Filter-based Wavelet Shrinkage Denoising of 1D Stellar Spectra
• Can the Low Redshift Lyman Alpha Forest Constrain AGN Feedback Models?
• Measuring the thermal and ionization state of the low-$z$ IGM using likelihood free inference
• X-ray Absorption Lines in the Warm-Hot Intergalactic Medium: Probing Chandra observations with the CAMEL simulations
• The Lyman-limit photon mean free path at the end of late reionisation in the Sherwood-Relics simulations
• Measurement of redshift-space two- and three-point correlation of Ly$\alpha$ absorbers at $1.7<z<3.5$: Implications on evolution of the physical properties of IGM