Hubble constant and dark energy inferred from free-form determined time delay distances

Abstract

Time delays between multiple images of lensed sources can probe the geometry of the universe. We propose a novel method based on free-form modelling of gravitational lenses to estimate time-delay distances and, in turn, cosmological parameters. This approach does not suffer from the degeneracy between the steepness of the profile and the cosmological parameters. We apply the method to 18 systems having time delay measurements and find H_0=69+-6(stat.)+-4(syst.) km s^{-1}Mpc^{-1}. In combination with WMAP9, the constraints on dark energy are Omega_w=0.68+-0.05 and w=-0.86+-0.17 in a flat model with constant equation-of-state.

6 pages; accepted for publication on MNRAS

References in corpus (12)

• Cosmological Constraints from Strong Gravitational Lensing in Galaxy Clusters
• Gravitational Lens Time Delays: A Statistical Assessment of Lens Model Dependences and Implications for the Global Hubble Constant
• The Rewards of Patience: An 822 Day Time Delay in the Gravitational Lens SDSS J1004+4112
• The Hubble time inferred from 10 time-delay lenses
• The time delay of the quadruple quasar RX J0911.4+0551
• A New Estimate of the Hubble Time with Improved Modeling of Gravitational Lenses
• COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses V. The time delay in SDSS J1650+4251
• The Hubble constant inferred from 18 time-delay lenses
• A Two-Year Time Delay for the Lensed Quasar SDSS J1029+2623
• The Third Image of the Large-Separation Lensed Quasar SDSS J1029+2623
• Time delay of SBS 0909+532
• First robotic monitoring of a lensed quasar: intrinsic variability of SBS 0909+532

Cited by in corpus (35)

• H0LiCOW XIII. A 2.4% measurement of $H_0$ from lensed quasars: $5.3\sigma$ tension between early and late-Universe probes
• TDCOSMO IV: Hierarchical time-delay cosmography -- joint inference of the Hubble constant and galaxy density profiles
• H0LiCOW IV. Lens mass model of HE 0435-1223 and blind measurement of its time-delay distance for cosmology
• Strong Lens Time Delay Challenge: II. Results of TDC1
• Space Warps II. New Gravitational Lens Candidates from the CFHTLS Discovered through Citizen Science
• Measurements of $H_0$ in modified gravity theories: The role of lensed quasars in the late-time Universe
• The Hubble constant from eight time-delay galaxy lenses
• The Hubble constant from SN Refsdal
• $H_0$ from ten well-measured time delay lenses
• Cosmic equation of state from combined angular diameter distances: Does the tension with luminosity distances exist?
• Cosmological distance indicators
• BAO signatures in the 2-point angular correlations and the Hubble tension
• Strongly Lensed Gravitational Waves and Electromagnetic Signals as Powerful Cosmic Rulers
• Hubble Asteroid Hunter: II. Identifying strong gravitational lenses in HST images with crowdsourcing
• Deriving the Hubble constant using Planck and XMM-Newton observations of galaxy clusters
• A Comparison of Cosmological Models Using Time Delay Lenses
• Time Delay Measurements for the Cluster-lensed Sextuple Quasar SDSS J2222+2745
• RELICS: Strong-lensing analysis of the massive clusters MACS J0308.9+2645 and PLCK G171.9-40.7
• Gravitational Lens Recovery with GLASS: Measuring the mass profile and shape of a lens
• RELICS: Strong Lensing analysis of the galaxy clusters Abell S295, Abell 697, MACS J0025.4-1222, and MACS J0159.8-0849
• New database for a sample of optically bright lensed quasars in the northern hemisphere
• Resolving the High Energy Universe with Strong Gravitational Lensing: The Case of PKS 1830-211
• Gravitational lens system SDSS J1339+1310: microlensing factory and time delay
• Gravitational Lenses as High-Resolution Telescopes
• The impact of line-of-sight structures on measuring $H_0$ with strong lensing time-delays
• Lensing time delays as a substructure constraint: a case study with the cluster SDSS~J1004+4112
• Gravitational lens modelling in a citizen science context
• Discovery of the optically bright, wide separation double quasar SDSS J1442+4055
• Strongly Lensed Jets, Time Delays, and the Value of H0
• Tailoring Strong Lensing Cosmographic Observations
• Lessons from a blind study of simulated lenses: image reconstructions do not always reproduce true convergence
• Consistent use of Type Ia supernovae highly magnified by galaxy clusters to constrain the cosmological parameters
• Microlensing masses via photon bunching
• Observations of General Relativity at strong and weak limits
• A Robust Bayesian Meta-Analysis for Estimating the Hubble Constant via Time Delay Cosmography