Test of conformal gravity with astrophysical observations

Abstract

Since it can describe the rotation curves of galaxies without dark matter and can give rise to accelerated expansion, conformal gravity attracts much attention recently. As a theory of modified gravity, it is important to test conformal gravity with astrophysical observations. Here we constrain conformal gravity with SNIa and Hubble parameter data and investigate whether it suffers from an age problem with the age of APM~08279+5255. We find conformal gravity can accommodate the age of APM~08279+5255 at 3 $\sigma$ deviation, unlike most of dark energy models which suffer from an age problem.

6 pages, 2 figures

References in corpus (20)

• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Likelihoods and Parameters from the WMAP data
• Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
• Dark torsion as the cosmic speed-up
• No-ghost theorem for the fourth-order derivative Pais-Uhlenbeck oscillator model
• A parametric model for dark energy
• Exactly solvable PT-symmetric Hamiltonian having no Hermitian counterpart
• Age Problem in the Holographic Dark Energy Model
• Fourth order Weyl gravity
• Lookback time as a test for brane cosmology
• Consistency of $f(R)=\sqrt{R^2-R_0^2}$ Gravity with the Cosmological Observations in Palatini Formalism
• Age constraints on the cosmic equation of state
• Light deflection in Weyl gravity: critical distances for photon paths
• Can Old Galaxies at High Redshifts and Baryon Acoustic Oscillations Constrain H_0?
• X-ray clusters of galaxies in conformal gravity
• Constraining the dark energy and smoothness-parameter with supernovae
• Charged Cylindrical Black Holes in Conformal Gravity
• Constraining scalar-tensor quintessence by cosmic clocks
• Is Thick Brane Model Consistent with the Recent Observations?
• Observational constraints on the braneworld model with brane-bulk energy exchange

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• Quasinormal Ringing and Shadows of Black Holes and Wormholes in Dark Matter-Inspired Weyl Gravity
• Inflationary cosmology from quantum Conformal Gravity
• Ergosphere, photon region structure, and the shadow of a rotating charged Weyl black hole
• Conformal gravity does not predict flat galaxy rotation curves
• Reconciling the cosmic age problem in the R_h=ct Universe
• Probing alternative cosmologies through the inverse distance ladder
• Gravitational waves in conformal gravity
• Astrophysical Tests of Kinematical Conformal Cosmology in Fourth-Order Conformal Weyl Gravity
• Anisotropic Conformal Dark Gravity on the Lorentz Tangent Bundle Spacetime
• Dynamical spacetimes in conformal gravity
• Mass decomposition of SLACS lens galaxies in Weyl conformal gravity
• Test of conformal gravity as an alternative to dark matter from the observations of elliptical galaxies
• Results from Hubble parameter data: oscillating dark energy?
• Statistical Strong Lensing as a Test of Conformal Gravity