TDCOSMO XXV: Measuring H0 to 6.5% precision with quasar strong lensing and maximally flexible mass-sheet dynamics

arXiv:2604.14145 · astro-ph.CO, astro-ph.GA · Submitted 2026-04-15 · Read on arXiv

astro-ph.CO, astro-ph.GA

Submitted: 2026-04-15

Updated: 2026-09-23

Comments: 24 pages, 14 figures, 8 tables, accepted to Physical Review D

Journal ref: Phys.Rev.D 114 (2026) 063509

DOI: 10.1103/rlrr-pzck

Project page: https://duxfrederic.github.io/lightcurver/https://cosmograil.gitlab.io/PyCS3

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Anisotropy — 21× in this paper · explained in 3 episodes
• Velocity Dispersion — 14× in this paper · explained in 2 episodes
• Aperture — 10× in this paper · explained in 1 episode
• Degeneracy — 9× in this paper · explained in 3 episodes
• Microlensing — 5× in this paper · explained in 2 episodes
• Gravitational Lensing — 4× in this paper · explained in 2 episodes
• Hubble Space Telescope — 4× in this paper
• Alignment — 3× in this paper · explained in 1 episode
• Calibration — 3× in this paper · explained in 7 episodes
• Accuracy — 2× in this paper · explained in 1 episode
• Dark Energy Spectroscopic Instrument — 2× in this paper
• Arbiter — 1× in this paper · explained in 1 episode
• Consistency — 1× in this paper · explained in 3 episodes
• Core — 1× in this paper · explained in 2 episodes
• Cosmic Microwave Background — 1× in this paper
• Fidelity — 1× in this paper · explained in 2 episodes
• Hubble Tension — 1× in this paper · explained in 9 episodes
• James Webb Space Telescope — 1× in this paper
• Robustness — 1× in this paper · explained in 5 episodes

Sources

• Dynamical Systematics for Time Delay Lenses and the Impact on the Hubble Constant
• The Chicago Carnegie Hubble Program: Improving the Calibration of SNe Ia with JWST Measurements of the Tip of the Red Giant Branch
• Spatially Resolved Kinematics of SLACS Lens Galaxies. II: Breaking Degeneracies with Lensing and Dynamical Models
• The stellar velocity anisotropy of strong lensing massive elliptical galaxies and its role in the inference of the Hubble parameter $H_0$ using spatially resolved kinematics

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