activity
20142025
most citedH0LiCOW XIII. A 2.4% measurement of from lensed quasars: tension between early and late-Universe probes

1.2k citations · 4.9k across the 42 of their papers we have counts for

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24 papers · 1 filter

astro-ph.CO2025★ 8 cited

TDCOSMO XVII. New time delays in 22 lensed quasars from optical monitoring with the ESO-VST 2.6m and MPG 2.2m telescopes

Frédéric Dux, Martin Millon, Aymeric Galan +29

We present new time delays, the main ingredient of time delay cosmography, for 22 lensed quasars resulting from high-cadence r-band monitoring on the 2.6 m ESO VLT Survey Telescope…

astro-ph.CO2023★ 37 cited

The Magnificent Five Images of Supernova Refsdal: Time Delay and Magnification Measurements

Patrick L. Kelly, Steven Rodney, Tommaso Treu +28

In late 2014, four images of Supernova (SN) "Refsdal," the first known example of a strongly lensed SN with multiple resolved images, were detected in the MACS J1149 galaxy-cluster…

astro-ph.CO2023★ 131 cited

Constraints on the Hubble constant from Supernova Refsdal's reappearance

Patrick L. Kelly, Steven Rodney, Tommaso Treu +27

The gravitationally lensed Supernova Refsdal appeared in multiple images, produced through gravitational lensing by a massive foreground galaxy cluster. After the supernova appeare…

astro-ph.CO2021★ 24 cited

HOLISMOKES -- VII. Time-delay measurement of strongly lensed Type Ia supernovae using machine learning

S. Huber, S. H. Suyu, D. Ghoshdastidar +7

The Hubble constant () is one of the fundamental parameters in cosmology, but there is a heated debate around the 4 tension between the local Cepheid distance ladder and…

astro-ph.CO2020★ 53 cited

TDCOSMO II: 6 new time delays in lensed quasars from high-cadence monitoring at the MPIA 2.2m telescope

M. Millon, F. Courbin, V. Bonvin +25

We present six new time-delay measurements obtained from -band monitoring data acquired at the Max Planck Institute for Astrophysics (MPIA) 2.2 m telescope at La Silla observa…

astro-ph.CO2020★ 49 cited

Time Delay Lens Modelling Challenge

X. Ding, T. Treu, S. Birrer +26

In recent years, breakthroughs in methods and data have enabled gravitational time delays to emerge as a very powerful tool to measure the Hubble constant . However, published…