3 papers
astro-ph.CO2026
TDCOSMO 2026: new insights on the Hubble tension from strong lensing time delays
TDCOSMO Collaboration, Simon Birrer, Michele Cappellari +26
We discuss the measurement of the Hubble constant () in flat cold dark matter cosmology based on the blind hierarchical analysis of 11 multiply-imaged quasars (hereafter t…
astro-ph.CO2026
TDCOSMO 2026: A 3% measurement of the Hubble constant from strong lensing and stellar kinematics
TDCOSMO Collaboration, Simon Birrer, Michele Cappellari +26
We present cosmological constraints from 11 strongly lensed quasars with measured time delays (hereafter, the TDCOSMO-2026 sample). In addition to expanding the sample, we improve…
astro-ph.IM2026
ALPACA I: Controlling source and PSF systematics in JWST time-delay cosmography with differentiable lens modeling
Hrvoje Krizic, Martin Millon, Aymeric Galan +2
Time-delay cosmography provides an independent probe of the Hubble constant (), but exploiting the high-resolution imaging of the James Webb Space Telescope (JWST) requires st…