The impact of AGN feedback on the 1D power spectra from the Ly$\alpha$ forest using the Horizon-AGN suite of simulations

Abstract

The Lyman-$\alpha$ forest is a powerful probe for cosmology, but it is also strongly impacted by galaxy evolution and baryonic processes such as Active Galactic Nuclei (AGN) feedback, which can redistribute mass and energy on large scales. We constrain the signatures of AGN feedback on the 1D power spectrum of the Lyman-$\alpha$ forest using a series of eight hydro-cosmological simulations performed with the Adaptative Mesh Refinement code RAMSES. This series starts from the Horizon-AGN simulation and varies the sub-grid parameters for AGN feeding, feedback and stochasticity. These simulations cover the whole plausible range of feedback and feeding parameters according to the resulting galaxy properties. AGNs globally suppress the Lyman-$\alpha$ power at all scales. On large scales, the energy injection and ionization dominate over the supply of gas mass from AGN-driven galactic winds, thus suppressing power. On small scales, faster cooling of denser gas mitigates the suppression. This effect increases with decreasing redshift. We provide lower and upper limits of this signature at nine redshifts between $z=4.25$ and $z=2.0$, making it possible to account for it at post-processing stage in future work given that running simulations without AGN feedback can save considerable amounts of computing resources. Ignoring AGN feedback in cosmological inference analyses leads to strong biases with 2\% shift on ${\sigma }_8$ and 1\% shift on $n_s$, which represents twice the standards deviation of the current constraints on $n_s$.

Accepted for publication in MNRAS

References in corpus (20)

• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• The DESI Experiment Part I: Science,Targeting, and Survey Design
• A unified model for AGN feedback in cosmological simulations of structure formation
• The Illustris simulation: the evolving population of black holes across cosmic time
• Slow Star Formation in Dense Gas: Evidence and Implications
• Direct cosmological simulations of the growth of black holes and galaxies
• Baryon acoustic oscillations from the complete SDSS-III Ly$\alpha$-quasar cross-correlation function at $z=2.4$
• How cold is cold dark matter? Small scales constraints from the flux power spectrum of the high-redshift Lyman-alpha forest
• Modelling baryonic feedback for survey cosmology
• Constraints from Ly-$\alpha$ forests on non-thermal dark matter including resonantly-produced sterile neutrinos
• Possible evidence for an inverted temperature-density relation in the intergalactic medium from the flux distribution of the Lyman-alpha forest
• Constraint on neutrino masses from SDSS-III/BOSS Ly$\alpha$ forest and other cosmological probes
• Voigt Profile Fitting to Quasar Absorption Lines: An Analytic Approximation to the Voigt-Hjerting Function
• The effect of baryons on the inner density profiles of rich clusters
• IGM Constraints from the SDSS-III/BOSS DR9 Ly-alpha Forest Flux Probability Distribution Function
• The SDSS-DR12 large-scale cross-correlation of Damped Lyman Alpha Systems with the Lyman Alpha Forest
• A New Precision Measurement of the Small-Scale Line-of-Sight Power Spectrum of the Ly$\alpha$ Forest
• Black hole mass estimation for Active Galactic Nuclei from a new angle
• The combined effect of AGN and supernovae feedback in launching massive molecular outflows in high-redshift galaxies
• WEAVE-QSO: A Massive Intergalactic Medium Survey for the William Herschel Telescope

Cited by in corpus (31)

• Introducing the NewHorizon simulation: Galaxy properties with resolved internal dynamics across cosmic time
• The Sherwood-Relics simulations: overview and impact of patchy reionization and pressure smoothing on the intergalactic medium
• How the super-Eddington regime regulates black hole growth in high-redshift galaxies
• Inferring the Thermal History of the Intergalactic Medium from the Properties of the Hydrogen and Helium Lyman-alpha Forest
• The role of gas fraction and feedback in the stability and evolution of galactic discs: implications for cosmological galaxy formation models
• Simulating intergalactic gas for DESI-like small scale Lymanα forest observations
• $5\sigma$ tension between Planck cosmic microwave background and eBOSS Lyman-alpha forest and constraints on physics beyond $\Lambda$CDM
• PRIYA: A New Suite of Lyman-alpha Forest Simulations for Cosmology
• From EMBER to FIRE: predicting high resolution baryon fields from dark matter simulations with Deep Learning
• Cosmological Constraints from the eBOSS Lyman-$\alpha$ Forest using the PRIYA Simulations
• Probing Feedback via IGM tomography and Ly$\alpha$ forest with Subaru PFS, TMT/ELT, and JWST
• Efficient long-range AGN feedback affects the low redshift Lyman-$\alpha$ forest
• Limits on non-canonical heating and turbulence in the intergalactic medium from the low redshift Lyman-alpha forest
• Modeling the Lyman-$\alpha$ forest with Eulerian and SPH hydrodynamical methods
• The low redshift Lyman-$\alpha$ Forest as a constraint for models of AGN feedback
• Observational Evidence for Large-Scale Gas Heating in a Galaxy Protocluster at z=2.30
• A neural network emulator for the Lyman-$\alpha$ 1D flux power spectrum
• Fast, high-fidelity Lyman $\alpha$ forests with convolutional neural networks
• Possible evidence for a large-scale enhancement in the Lyman-$\alpha$ forest power spectrum at redshift $\text{z}\ge 4$
• Formation of compact galaxies in the Extreme-Horizon simulation
• Measurement of the small-scale 3D Lyman-$\alpha$ forest power spectrum
• Ly$\alpha$ forest power spectrum as an emerging window into the epoch of reionization and cosmic dawn
• A Multi-Fidelity Emulator for the Lyman-$\alpha$ Forest Flux Power Spectrum
• Constraining the Fluctuating Gunn-Peterson Approximation Using Lyman-$\alpha$ Forest Tomography at $z=2$
• LyMAS reloaded: improving the predictions of the large-scale Lyman-α forest statistics from dark matter density and velocity fields
• Extracting the astrophysics of reionization from the Ly$\alpha$ forest power spectrum: a first forecast
• Detecting preheating in proto-clusters with Lyman-$\alpha$ Forest Tomography
• Can the Low Redshift Lyman Alpha Forest Constrain AGN Feedback Models?
• Assuming Ionization Equilibrium and the Impact on the Lyman-$\alpha$ Forest Power Spectrum during the End of Reionization at $8\ge z\ge 5$
• Reconstructing the Gravitational Lensing Potential from the Lyman-$\alpha$ Forest
• ForestFlow: predicting the Lyman-$\alpha$ forest clustering from linear to nonlinear scales