The Linear Growth of Structure in the R_h=ct Universe

Abstract

We use recently published redshift space distortion measurements of the cosmological growth rate, f sigma_8(z), to examine whether the linear evolution of perturbations in the R_h=ct cosmology is consistent with the observed development of large scale structure. We find that these observations favour R_h=ct over the version of LCDM optimized with the joint analysis of Planck and linear growth rate data, particularly in the redshift range 0 < z < 1, where a significant curvature in the functional form of f sigma_8(z) predicted by the standard model---but not by R_h=ct---is absent in the data. When LCDM is optimized using solely the growth rate measurements, however, the two models fit the observations equally well though, in this case, the low-redshift measurements find a lower value for the fluctuation amplitude than is expected in Planck LCDM. Our results strongly affirm the need for more precise measurements of f sigma_8(z) at all redshifts, but especially at z < 1.

26 pages, 3 figures. Accepted for publication in MNRAS

References in corpus (15)

• A test of the nature of cosmic acceleration using galaxy redshift distortions
• Improving Cosmological Distance Measurements by Reconstruction of the Baryon Acoustic Peak
• Testing cosmological structure formation using redshift-space distortions
• Relativistic cosmology and large-scale structure
• Observational Tests of Modified Gravity
• The 2dF-SDSS LRG and QSO Survey: QSO clustering and the L-z degeneracy
• The 2dF-SDSS LRG and QSO Survey: The LRG 2-Point Correlation Function and Redshift-Space Distortions
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Signs of neutrino mass in current cosmological datasets
• Consistency test of general relativity from large scale structure of the Universe
• We do not live in the R_h = c t universe
• Robust model comparison disfavors power law cosmology
• A Comparison of Cosmological Models Using Time Delay Lenses
• Testing Cosmological Models with Type Ic Super Luminous Supernovae
• The Age-Redshift Relationship of Old Passive Galaxies
• Cosmological Tests with the FSRQ Gamma-ray Luminosity Function

Cited by in corpus (31)

• Challenges for $\Lambda$CDM: An update
• $H_0$ Tension, Phantom Dark Energy and Cosmological Parameter Degeneracies
• An improved model-independent assessment of the late-time cosmic expansion
• Strong evidence for an accelerating universe
• The evidence of cosmic acceleration and observational constraints
• A comparison of the R_h=ct and LCDM cosmologies using the Cosmic Distance Duality Relation
• Testing the Distance-Duality Relation in the $R_h=ct$ Universe
• Model Selection with Strong-lensing Systems
• A Solution to the electroweak horizon problem in the R_h=ct universe
• The Maximum Angular-Diameter Distance in Cosmology
• Cosmological Tests With Strong Gravitational Lenses using Gaussian Processes
• Theory of gravity admitting arbitrary choice of the energy density reference level
• Cosmological constraints from low-redshift data
• A Two-point Diagnostic for the HII Galaxy Hubble Diagram
• Local probes strongly favor $\Lambda$CDM against power-law and $R_h=ct$ universe
• Is gravity getting weaker at low z? Observational evidence and theoretical implications
• A Cosmological Solution to the Impossibly Early Galaxy Problem
• Testing the $R_{\mathrm{h}}=ct$ Universe Jointly with the Redshift-dependent Expansion rate and Angular-diameter and Luminosity Distances
• Reference level of the vacuum energy density of the Universe and astrophysical data
• A comparison of the R_h=ct and LCDM cosmologies based on the observed halo mass function
• Unseen Progenitors of Luminous High-z Quasars in the R_h=ct Universe
• Reassessing Dust's Role in Forming the CMB
• J1342+0928 Supports the Timeline in the R_h=ct Cosmology
• Model Selection based on the Angular-Diameter Distance to the Compact Structure in Radio Quasars
• Phantom Dirac-Born-Infeld Dark Energy
• A Pop III generated dust screen at z~16
• Tantalizing New Physics from the Cosmic Purview
• A Cosmological basis for E=mc^2
• Matter creation and primordial CMB Spectrum in the inflationless Milne-like cosmologies
• Tensor Fluctuations in the Early Universe
• Cosmological test using the high-redshift detection rate of FSRQs with the Square Kilometer Array