Realistic simulations of galaxy formation in f(R) modified gravity

Abstract

We have carried out a set of cosmological hydrodynamical simulations that follow galaxy formation in $f(R)$ modified gravity models. Our simulations employ the Illustris-TNG full physics model and a new modified gravity solver in the AREPO code. For the first time we are able to investigate the degeneracy in the matter power spectrum between the effects of $f(R)$-gravity and feedback from active galactic nuclei (AGN), and the imprint of modified gravity on the properties of galaxies and on the distribution of dark matter, gas and stars in the universe. $f(R)$-gravity has an observable effect on the neutral hydrogen power spectrum at high redshift at a level of 20%. For both the F6 and F5 models, this is significantly larger than the predicted errors for the SKA1-MID survey, making this probe a powerful test of gravity on large scales. A similar effect is present in the power spectrum of the stars at high redshift. We also show that rotationally supported disc galaxies can form in $f(R)$-gravity, even in the partially screened regime. Our simulations indicate that there might be more disc galaxies in F6 compared to GR, and fewer in F5. Finally, we show that the back reaction between AGN feedback and modified gravity in the matter power spectrum is not important in the F6 model but has a sizeable effect in F5.

arXiv comment13 pages, 4 figures, published in Nature Astronomy, the published version of this preprint and supplementary material are available from this URL: https://www.nature.com/articles/s41550-019-0823-y

References in corpus (50)

• Planck 2015 results. XIII. Cosmological parameters
• The cosmological simulation code GADGET-2
• f(R) Theories Of Gravity
• The Confrontation between General Relativity and Experiment
• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• E pur si muove: Galiliean-invariant cosmological hydrodynamical simulations on a moving mesh
• Introducing the Illustris Project: Simulating the coevolution of dark and visible matter in the Universe
• The Average Star Formation Histories of Galaxies in Dark Matter Halos from z=0-8
• Simulating Galaxy Formation with the IllustrisTNG Model
• First results from the IllustrisTNG simulations: matter and galaxy clustering
• Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
• First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies
• Chameleon Cosmology
• First results from the IllustrisTNG simulations: the galaxy color bimodality
• Properties of galaxies reproduced by a hydrodynamic simulation
• Simulating galaxy formation with black hole driven thermal and kinetic feedback
• First results from the IllustrisTNG simulations: radio haloes and magnetic fields
• Dark Energy after GW170817: dead ends and the road ahead
• Implications of the Neutron Star Merger GW170817 for Cosmological Scalar-Tensor Theories
• Galaxy And Mass Assembly (GAMA): The galaxy stellar mass function at z < 0.06
• Breaking a Dark Degeneracy with Gravitational Waves
• Stellar and total baryon mass fractions in groups and clusters since redshift 1
• The massive end of the luminosity and stellar mass functions: Dependence on the fit to the light profile
• The Size Evolution of Star-forming and Quenched Galaxies in the IllustrisTNG simulation
• Challenges to Self-Acceleration in Modified Gravity from Gravitational Waves and Large-Scale Structure
• Scaling Properties of a Complete X-ray Selected Galaxy Group Sample
• ECOSMOG: An Efficient Code for Simulating Modified Gravity
• Ingredients for 21cm intensity mapping
• Modified Gravity-GADGET: A new code for cosmological hydrodynamical simulations of modified gravity models
• Limits of Quasi-Static Approximation in Modified-Gravity Cosmologies
• Modified Gravity N-body Code Comparison Project
• Dynamical Masses in Modified Gravity
• ISIS: a new N-body cosmological code with scalar fields based on RAMSES. Code presentation and application to the shapes of clusters
• Testing chameleon gravity with the Coma cluster
• The effect of baryons on redshift space distortions and cosmic density and velocity fields in the EAGLE simulation
• Modeling halo mass functions in chameleon f(R) gravity
• Testing General Relativity using the Environmental Dependence of Dark Matter Halos
• The Massive End of the Stellar Mass Function
• Size matters: abundance matching, galaxy sizes, and the Tully-Fisher relation in EAGLE
• Speeding up $N$-body simulations of modified gravity: Chameleon screening models
• Hierarchical clustering in chameleon $f(R)$ gravity
• The Impact of Different Physical Processes on the Statistics of Lyman-limit and Damped Lyman-alpha Absorbers
• The modified gravity lightcone simulation project I: Statistics of matter and halo distributions
• Hydrodynamic Effects in the Symmetron and $f(R)$-gravity Models
• No evidence for modifications of gravity from galaxy motions on cosmological scales
• A general framework to test gravity using galaxy clusters I: Modelling the dynamical mass of haloes in $f(R)$ gravity
• The Lyman-alpha forest in f(R) modified gravity
• Galaxy-galaxy weak gravitational lensing in $f(R)$ gravity
• Zoomed cosmological simulations of Milky Way sized halos in f(R)-gravity
• An accurate method of modeling cluster scaling relations in modified gravity

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• FORGE -- the f(R) gravity cosmic emulator project I: Introduction and matter power spectrum emulator
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• Simulating galaxy formation in f(R) modified gravity: Matter, halo, and galaxy-statistics
• The e-MANTIS emulator: fast predictions of the non-linear matter power spectrum in $f(R)$CDM cosmology
• Solar System tests and chameleon effect in f (R) gravity
• The matter density PDF for modified gravity and dark energy with Large Deviations Theory
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• A general framework to test gravity using galaxy clusters III: Observable-mass scaling relations in $f(R)$ gravity
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• A general framework to test gravity using galaxy clusters VI: Realistic galaxy formation simulations to study clusters in modified gravity
• Towards an accurate model of small-scale redshift-space distortions in modified gravity
• A general framework to test gravity using galaxy clusters V: A self-consistent pipeline for unbiased constraints of $f(R)$ gravity
• Euclid preparation LXXI. Simulations and nonlinearities beyond $\mathsf{\Lambda }$CDM. 3. Constraints on $f(R)$ models from the photometric primary probes
• Cosmological gravity on all scales III: non-linear matter power spectrum in phenomenological modified gravity
• A new test of gravity -- I: Introduction to the method
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• Fingerprints of modified gravity on galaxies in voids
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• Euclid preparation. Simulations and nonlinearities beyond $\Lambda$CDM. 1. Numerical methods and validation
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• Misinterpreting Modified Gravity as Dark Energy: a Quantitative Study
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• Galaxy clustering in modified gravity from full-physics simulations. I: two-point correlation functions
• Probing gravity with non-linear clustering in redshift space
• Dynamic Zoom Simulations of structure formation beyond standard cosmology
• Marked statistics across the cosmic web: Environmental dependent clustering in modified gravity simulations
• Cosmological constraints on viable $f(R)$ models using weak lensing