Constraints on galileons from the positions of supermassive black holes

Abstract

Galileons are scalar field theories which obey the Galileon symmetry $\phi \to \phi +b+c_{\mu }{x}^{\mu }$ and are capable of self-acceleration if they have an inverted sign for the kinetic term. These theories violate the Strong Equivalence Principle, such that black holes (BHs) do not couple to the Galileon field, whereas non-relativistic objects experience a fifth force with strength $\Delta G/G_{\mathrm{N}}$ relative to gravity. For galaxies falling down a gradient in the Galileon field, this results in an offset between the centre of the galaxy and its host supermassive BH. We reconstruct the local gravitational and Galileon fields through a suite of constrained N-body simulations (which we dub CSiBORG) and develop a Monte Carlo-based forward model for these offsets on a galaxy-by-galaxy basis. Using the measured offset between the optical centre and active galactic nucleus of 1916 galaxies from the literature, propagating uncertainties in the input quantities and marginalising over an empirical noise model describing astrophysical and observational noise, we constrain the Galileon coupling to be $\Delta G/G_{\mathrm{N}}<0.16$ at $1\sigma$ confidence for Galileons with crossover scale $r_{\mathrm{C}}\gtrsim H_0^{-1}$.

18 pages, 6 figures, 2 tables, accepted for publication in Physical Review D

References in corpus (27)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• Dark Energy and the Accelerating Universe
• Beyond the Cosmological Standard Model
• Dark Energy after GW170817: dead ends and the road ahead
• The Illustris simulation: the evolving population of black holes across cosmic time
• Galileon Gravity in Light of ISW, CMB, BAO and $H_0$ data
• Lectures on the Cosmological Constant Problem
• Brans-Dicke gravity with a cosmological constant smoothes out $\Lambda$CDM tensions
• The Relation between Stellar and Dynamical Surface Densities in the Central Regions of Disk Galaxies
• A Compendium of Chameleon Constraints
• Non-linear interactions in a cosmological background in the DGP braneworld
• N-Body Simulations of DGP and Degravitation Theories
• VLBI-Gaia offsets favor parsec-scale jet direction in Active Galactic Nuclei
• Time-dependent spherically symmetric covariant Galileons
• Phenomenology of the generalized cubic covariant Galileon model and cosmological bounds
• Galaxy morphology rules out astrophysically relevant Hu-Sawicki $f(R)$ gravity
• Universal MOND relation between the baryonic and `dynamical' central surface densities of disc galaxies
• The Vainshtein Mechanism in the Cosmic Web
• Seeding Black Holes in Cosmological Simulations
• Cosmological perturbations in the DGP braneworld: numeric solution
• Screened fifth forces lower the TRGB-calibrated Hubble constant too
• Spatially-Offset AGN Candidates in the CLASS Survey
• Systematic-free inference of the cosmic matter density field from SDSS3-BOSS data
• Solar system constraints on the Dvali-Gabadadze-Porrati braneworld theory of gravity
• Subhalo sinking and off-center massive black holes in dwarf galaxies
• Testing self-interacting dark matter with galaxy warps

Cited by in corpus (17)

• Testing Screened Modified Gravity
• A direct measurement of the distance to the Galactic center using the kinematics of bar stars
• Neutrino-Assisted Early Dark Energy: Theory and Cosmology
• Cosmological constraints on Galileon dark energy with broken shift symmetry
• Constraints on dark matter annihilation and decay from the large-scale structure of the nearby universe
• Field-Based Physical Inference From Peculiar Velocity Tracers
• Catalogues of voids as antihalos in the local Universe
• Constraints on Equivalence Principle Violation from Gamma Ray Bursts
• The effect of local universe constraints on halo abundance and clustering
• Optimal machine-driven acquisition of future cosmological data
• Evaluating the variance of individual halo properties in constrained cosmological simulations
• Searching for new physics in the solar system with tetrahedral spacecraft formations
• Calibrating galaxy formation effects in galactic tests of fundamental physics
• Learning the Universe: Learning to Optimize Cosmic Initial Conditions with Non-Differentiable Structure Formation Models
• The Velocity Field Olympics: Assessing velocity field reconstructions with direct distance tracers
• The galaxy-environment connection revealed by constrained simulations
• The Manticore Project II: Bayesian digital twins of cosmic structure across the SDSS and BOSS volumes