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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…
Search for strongly lensed counterpart images of binary black hole mergers in the first two LIGO observing runs
Connor McIsaac, David Keitel, Thomas Collett +4
Strong gravitational lensing can produce multiple images of the same gravitational-wave signal, each arriving at different times and with different magnification. Previous work has…
Observation and Confirmation of Nine Strong Lensing Systems in Dark Energy Survey Year 1 Data
B. Nord, E. Buckley-Geer, H. Lin +63
We describe the observation and confirmation of \nbconfirmtext\ new strong gravitational lenses discovered in Year 1 data from the Dark Energy Survey (DES). We created candidate li…
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…
An extended catalog of galaxy-galaxy strong gravitational lenses discovered in DES using convolutional neural networks
C. Jacobs, T. Collett, K. Glazebrook +55
We search Dark Energy Survey (DES) Year 3 imaging for galaxy-galaxy strong gravitational lenses using convolutional neural networks, extending previous work with new training sets…
Model-independent determination of and from strong lensing and type Ia supernovae
Thomas Collett, Francesco Montanari, Syksy Rasanen
We present the first determination of the Hubble constant from strong lensing time delay data and type Ia supernova luminosity distances that is independent of the cosmologic…
H0LiCOW X: Spectroscopic/imaging survey and galaxy-group identification around the strong gravitational lens system WFI2033-4723
D. Sluse, C. E. Rusu, C. D. Fassnacht +65
Galaxies and galaxy groups located along the line of sight towards gravitationally lensed quasars produce high-order perturbations of the gravitational potential at the lens positi…
4MOST: Project overview and information for the First Call for Proposals
R. S. de Jong, O. Agertz, A. Agudo Berbel +335
We introduce the 4-metre Multi-Object Spectroscopic Telescope (4MOST), a new high-multiplex, wide-field spectroscopic survey facility under development for the four-metre-class Vis…
Single-object Imaging and Spectroscopy to Enhance Dark Energy Science from LSST
Renée A. Hložek, Thomas Collett, Lluís Galbany +9
Single-object imaging and spectroscopy on telescopes with apertures ranging from ~4 m to 40 m have the potential to greatly enhance the cosmological constraints that can be obtaine…
Wide-field Multi-object Spectroscopy to Enhance Dark Energy Science from LSST
Rachel Mandelbaum, Jonathan Blazek, Nora Elisa Chisari +12
LSST will open new vistas for cosmology in the next decade, but it cannot reach its full potential without data from other telescopes. Cosmological constraints can be greatly enhan…
Strong Lensing considerations for the LSST observing strategy
Aprajita Verma, Thomas Collett, Graham P. Smith +2
Strong gravitational lensing enables a wide range of science: probing cosmography; testing dark matter models; understanding galaxy evolution; and magnifying the faint, small and d…