9 papers
COSMOGRAIL XIX: Time delays in 18 strongly lensed quasars from 15 years of optical monitoring
M. Millon, F. Courbin, V. Bonvin +16
We present the results of 15 years of monitoring lensed quasars, which was conducted by the COSMOGRAIL programme at the Leonhard Euler 1.2m Swiss Telescope. The decade-long light c…
A Microlensing Accretion Disk Size Measurement in the Lensed Quasar WFI 2026-4536
Matthew A. Cornachione, Christopher W. Morgan, Martin Millon +4
We use thirteen seasons of R-band photometry from the 1.2m Leonard Euler Swiss Telescope at La Silla to examine microlensing variability in the quadruply-imaged lensed quasar WFI 2…
TDCOSMO. I. An exploration of systematic uncertainties in the inference of from time-delay cosmography
M. Millon, A. Galan, F. Courbin +22
Time-delay cosmography of lensed quasars has achieved 2.4% precision on the measurement of the Hubble constant, . As part of an ongoing effort to uncover and control systemati…
STRIDES: a 3.9 per cent measurement of the Hubble constant from the strong lens system DES J0408-5354
A. J. Shajib, S. Birrer, T. Treu +88
We present a blind time-delay cosmographic analysis for the lens system DES J04085354. This system is extraordinary for the presence of two sets of multiple images at different…
Twisted quasar light curves: implications for continuum reverberation mapping of accretion disks
J. H-H. Chan, M. Millon, V. Bonvin +1
With the advent of high-cadence and multi-band photometric monitoring facilities, continuum reverberation mapping is becoming of increasing importance to measure the physical size…
Cosmic dissonance: new physics or systematics behind a short sound horizon?
Nikki Arendse, Radosław J. Wojtak, Adriano Agnello +12
Persistent tension between low-redshift observations and the Cosmic Microwave Background radiation (CMB), in terms of two fundamental distance scales set by the sound horizon …