Lyman-alpha power spectrum as a probe of modified gravity

Abstract

We investigate the impact of modified-gravity models on the Lyman-$\alpha$ power spectrum. Building a simple analytical modeling, based on a truncated Zeldovich approximation, we estimate the intergalactic medium power spectrum and the Lyman-$\alpha$ flux decrement power spectrum along the line of sight. We recover the results of numerical simulations for $f(R)$-gravity models and present new results for K-mouflage scenarios. We find that the shape of the distortion due to the modified gravity depends on the model, through the scale-dependence or not of their growth rate. This is more clearly seen in the three-dimensional power spectrum than in the one-dimensional power spectrum, where the line-of-sight integration smoothes the deviation. Whilst the Lyman-$\alpha$ power spectrum does not provide competitive bounds for $f(R)$ theories, it could provide useful constraints for the K-mouflage models. Thus, the efficiency of the Lyman-$\alpha$ power spectrum as a probe of modified-gravity scenarios depends on the type of screening mechanism and the related scale dependence it induces. The prospect of a full recovery of the three-dimensional Lyman-$\alpha$ power spectrum from data would also lead to stronger constraints and a better understanding of screening mechanisms.

25 pages

References in corpus (57)

• Modified Gravity and Cosmology
• Large-Scale Structure of the Universe and Cosmological Perturbation Theory
• Resummation of Massive Gravity
• Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
• Chameleon Fields: Awaiting Surprises for Tests of Gravity in Space
• Chameleon Cosmology
• From k-essence to generalised Galileons
• Bimetric Gravity from Ghost-free Massive Gravity
• Dark Energy after GW170817 and GRB170817A
• Warm Dark Matter as a solution to the small scale crisis: new constraints from high redshift Lyman-alpha forest data
• Equation of State of the Photoionized Intergalactic Medium
• Implications of the Neutron Star Merger GW170817 for Cosmological Scalar-Tensor Theories
• Healthy theories beyond Horndeski
• First constraints on fuzzy dark matter from Lyman-$\alpha$ forest data and hydrodynamical simulations
• The Lyman-alpha Forest Power Spectrum from the Sloan Digital Sky Survey
• Towards a Precise Measurement of Matter Clustering: Lyman-alpha Forest Data at Redshifts 2-4
• Recovery of the Power Spectrum of Mass Fluctuations from Observations of the Lyman-alpha Forest
• Probing the Universe with the Lyman-alpha Forest: I. Hydrodynamics of the Low Density IGM
• The Linear Theory Power Spectrum from the Lyman-alpha Forest in the Sloan Digital Sky Survey
• Evolution of Structure in the Intergalactic Medium and the Nature of the Ly-alpha Forest
• k-Mouflage gravity
• HeII Reionization and its Effect on the IGM
• Toward a Measurement of the Cosmological Geometry at z~2: Predicting Lyman-alpha Forest Correlation in Three Dimensions, and the Potential of Future Data Sets
• The one-dimensional Ly-alpha forest power spectrum from BOSS
• Lyman-alpha Forests cool Warm Dark Matter
• Lyman-alpha Forest Constraints on the Mass of Warm Dark Matter and the Shape of the Linear Power Spectrum
• Constraints on the Effects of Locally-biased Galaxy Formation
• Nonlinear Cosmological Power Spectra in Real and Redshift--Space
• The Statistics of Density Peaks and the Column Density Distribution of the Lyman-Alpha Forest
• Constraining chameleon models with cosmology
• Inversion of the Lyman-$\alpha$ forest: 3D investigation of the intergalactic medium
• Stability of a black hole and the speed of gravity waves within self-tuning cosmological models
• The Non-Linear Power Spectrum of the Lyman Alpha Forest
• Dynamics of gravitational clustering II. Steepest-descent method for the quasi-linear regime
• Screening fifth forces in k-essence and DBI models
• K-mouflage Cosmology: the Background Evolution
• Back in the saddle: Large-deviation statistics of the cosmic log-density field
• Impact on the power spectrum of Screening in Modified Gravity Scenarios
• Bias, redshift space distortions and primordial nongaussianity of nonlinear transformations: application to Lyman alpha forest
• Inferring the Linear Power Spectrum from the Lyman-alpha Forest
• K-mouflage Cosmology: Formation of Large-Scale Structures
• The Lyman alpha forest flux probability distribution at z>3
• How to estimate the 3D power spectrum of the Lyman-$\alpha$ forest
• Suite of Hydrodynamical Simulations for the Lyman-Alpha Forest with Massive Neutrinos
• Neutron star merger GW170817 strongly constrains doubly coupled bigravity
• Structure Formation in Modified Gravity Scenarios
• Lyman-$\alpha$ forest constraints on interacting dark sectors
• LyMAS: Predicting Large-Scale Lyman-alpha Forest Statistics from the Dark Matter Density Field
• A Large Deviation Principle at play in Large-Scale Structure cosmology
• The broadening of Lyman-alpha forest absorption lines
• Nonparametric 3D map of the IGM using the Lyman-alpha forest
• K-mouflage gravity models that pass Solar System and cosmological constraints
• Towards physics responsible for large-scale Lyman-$\alpha$ forest bias parameters
• K-mouflage effects on clusters of galaxies
• The Lyman-alpha forest in f(R) modified gravity
• Large-scale 3D mapping of the intergalactic medium using the Lyman Alpha Forest
• Modeling Lyman-α Forest Cross-Correlations with LyMAS

Cited by in corpus (1)

• Intensity mapping of post-reionization 21-cm signal and its cross-correlations as a probe of $f(R)$ gravity