Fingerprints of modified gravity on galaxies in voids

Abstract

We search for detectable signatures of f(R) gravity and its chameleon screening mechanism in the baryonic and dark matter (DM) properties of simulated void galaxies. The enhancement of the gravitational acceleration can have a meaningful impact on the scaling relations as well as on the halo morphology. The galaxy rotational velocity field (calculated with the velocity of the gas disc and the acceleration fields) deviates from the typical values of the Tully-Fisher Relation (TFR) in GR. For a given stellar mass, f(R) gravity tends to produce greater maximum velocities. On the other hand, the mass in haloes in f(R) gravity is more concentrated than their counterparts in GR. This trend changes when the concentration is calculated with the dynamical density profile, which takes into account the unscreened outer regions of the halo. Stellar discs interact with the overall potential well in the central regions, modifying the morphology of the screening regions and reshaping them. We find a trend for galaxies with a more dominant stellar disc to deviate further from round screening regions. We find that small haloes are less triaxial and more round in f(R) than their GR counterparts. The difference between halo morphology becomes smaller in f(R) haloes whose inner regions are screened. These results suggest possible observables that could unveil modified gravity effects on galaxies in voids in future cosmological tests of gravity.

arXiv comment19 pages, 10 figures

References in corpus (69)

• Planck 2015 results. XIII. Cosmological parameters
• A Universal Density Profile from Hierarchical Clustering
• Modified Gravity and Cosmology
• f(R) theories
• E pur si muove: Galiliean-invariant cosmological hydrodynamical simulations on a moving mesh
• 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 galaxy color bimodality
• First results from the IllustrisTNG simulations: radio haloes and magnetic fields
• Triaxial Modeling of Halo Density Profiles with High-resolution N-body Simulations
• How do galaxies populate Dark Matter halos?
• Concentration, Spin and Shape of Dark Matter Haloes as a Function of the Cosmological Model: WMAP1, WMAP3 and WMAP5 results
• Concentration, Spin and Shape of Dark Matter Haloes: Scatter and the Dependence on Mass and Environment
• Detecting Dark Energy in Orbit -- the Cosmological Chameleon
• The Baryonic Tully-Fisher Relation of Gas Rich Galaxies as a Test of LCDM and MOND
• EMERGE - An empirical model for the formation of galaxies since $z\sim 10$
• Internal and External Alignment of the Shapes and Angular Momenta of LCDM Halos
• Tests of Chameleon Gravity
• Galaxies in LCDM with Halo Abundance Matching: luminosity-velocity relation, baryonic mass-velocity relation, velocity function and clustering
• f(R) Gravity and Chameleon Theories
• The Size Evolution of Star-forming and Quenched Galaxies in the IllustrisTNG simulation
• N-body Simulations for f(R) Gravity using a Self-adaptive Particle-Mesh Code
• Testing Gravity using Cosmic Voids
• Halos and Voids in f(R) Gravity
• Chemical signatures of formation processes in the stellar populations of simulated galaxies
• MaGICC Disks: Matching Observed Galaxy Relationships Over a Wide Stellar Mass Range
• Voids in Modified Gravity: Excursion Set Predictions
• The Impact of Feedback on Disk Galaxy Scaling Relations
• On determining the shape of matter distributions
• Shape of Dark Matter Haloes in the Illustris Simulation: Effects of Baryons
• Testing chameleon gravity with the Coma cluster
• Testing Gravity Using Dwarf Stars
• Modified Gravity Makes Galaxies Brighter
• Analyzing the $H_0$ tension in $F(R)$ gravity models
• Some like it triaxial: the universality of dark matter halo shapes and their evolution along the cosmic time
• The XMM Cluster Survey: Testing chameleon gravity using the profiles of clusters
• Cosmic voids in modified gravity models with massive neutrinos
• Chameleon f(R) gravity in the virialized cluster
• Tests of Modified Gravity with Dwarf Galaxies
• The Santiago-Harvard-Edinburgh-Durham void comparison II: unveiling the Vainshtein screening using weak lensing
• Stellar Oscillations in Modified Gravity
• Galaxy morphology rules out astrophysically relevant Hu-Sawicki $f(R)$ gravity
• Astrophysical Tests of Modified Gravity: A Screening Map of the Nearby Universe
• Properties of Dark Matter Halos as a Function of Local Environment Density
• Dark Matter Halo Structure in CDM Hydrodynamical Simulations
• Astrophysical Tests of Modified Gravity: Stellar and Gaseous Rotation Curves in Dwarf Galaxies
• Realistic simulations of galaxy formation in f(R) modified gravity
• Halo ellipticity of GAMA galaxy groups from KiDS weak lensing
• The shape of dark matter subhalos in the Aquarius simulations
• Caught in the cosmic web: Environmental effect on halo concentrations, shape, and spin
• Exploring the liminality: properties of haloes and subhaloes in borderline $f(R)$ gravity
• The cosmological constant derived via galaxy groups and clusters
• A general framework to test gravity using galaxy clusters I: Modelling the dynamical mass of haloes in $f(R)$ gravity
• A general framework to test gravity using galaxy clusters II: A universal model for the halo concentration in $f(R)$ gravity
• Constraints on Chameleon f(R)-Gravity from Galaxy Rotation Curves of the SPARC Sample
• Imprints of Chameleon f(R) Gravity on Galaxy Rotation Curves
• Simulating galaxy formation in f(R) modified gravity: Matter, halo, and galaxy-statistics
• Baryons Shaping Dark Matter Haloes
• A general framework to test gravity using galaxy clusters IV: Cluster and halo properties in DGP gravity
• Zoomed cosmological simulations of Milky Way sized halos in f(R)-gravity
• Simulation techniques for modified gravity
• Testing $f(R)$ Gravity With Scale Dependent Cosmic Void Velocity Profiles
• Dark Matter Response to Galaxy Assembly History
• Effective Dark Matter Halo catalog in $f(R)$ gravity
• Rotation curve bifurcations as indicators of close recent galaxy encounters
• Galaxies with Declining Rotation Curves
• Stellar Streams in Chameleon Gravity

Cited by in corpus (5)

• Redshift evolution of the dark matter haloes shapes
• Studying large-scale structure probes of modified gravity with COLA
• Accurate Computation of the Screening of Scalar Fifth Forces in Galaxies
• Void Lensing in Cubic Galileon Gravity
• Using Elliptical Galaxy Kinematics to Compare of the Strength of Gravity in Cosmological Regions of Differing Gravitational Potential -- A First Look