activity
20182026
most citedH0LiCOW XIII. A 2.4% measurement of from lensed quasars: tension between early and late-Universe probes

1.2k citations · 3.6k across the 67 of their papers we have counts for

collaborators

70 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.CO2026

JWST lensed quasar dark matter survey V: Hints of self-interacting dark matter from 29 quadruply imaged quasars

D. Gilman, A. M. Nierenberg, J. Gurian +21

Theories of self-interacting dark matter (SIDM) predict the eventual core collapse of dark matter halos, a process that transforms these structures into extremely efficient gravita…

astro-ph.CO2026

TDCOSMO XXXI: New techniques in line-of-sight studies of time delay lenses

Daniel Johnson, Devon Williams, Chris Fassnacht +5

The distribution of matter along the same line of sight but external to the main lens, quantified by , is a key source of uncertainty in time delay cosmography and…

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…

astro-ph.CO2026

TDCOSMO XXVIII. The Hubble constant from the quadruply lensed quasar J15373010 with precise time delays

A. Galan, A. G. Schweinfurth, S. H. Suyu +21

We present the first measurement of the Hubble constant () from the quadruply-lensed quasar J15373010, which has optically-measured time delays at precision. We…