activity
20162026
most citedTDCOSMO IV: Hierarchical time-delay cosmography -- joint inference of the Hubble constant and galaxy density profiles

373 citations · 905 across the 14 of their papers we have counts for

collaborators

15 papers

astro-ph.CO2026

Follow-up of SN 2025wny V: Lens Modelling and Cosmography of a Strongly Lensed Superluminous Supernova at using Space Data

Edvard Mörtsell, Joel Johansson, Ariel Goobar +12

We present a lensing and cosmographic analysis of the strongly lensed Type I superluminous supernova SN 2025wny at redshift , multiply imaged by two foreground galaxies at…

astro-ph.CO2026

Follow-up of SN 2025wny I: Space-based Observations of the First Multiply-imaged Superluminous Supernova

Ariel Goobar, Joel Johansson, Edvard Mörtsell +21

We present space-based follow-up observations of the superluminous Type I supernova (SLSN-I) SN 2025wny at redshift , gravitationally lensed by two galaxies at redsh…

astro-ph.GA2026

Multi-band Reconstruction of Sixteen Gravitational Lens Systems using PISCO data

Huimin Qu, Daniel J. Ballard, Geraint F. Lewis +12

Next-generation surveys such as the Euclid survey, the Legacy Survey of Space and Time (LSST), and the China Space Station Telescope (CSST) survey are expected to discover ~10^5 ga…

astro-ph.CO2025

Lensed stars in galaxy-galaxy strong lensing -- a JWST prediction for the Cosmic Horseshoe

Sung Kei Li, Luke Weisenbach, Thomas E. Collett +10

We explore for the first time the possibility of detecting lensed star transients in galaxy-galaxy strong lensing systems upon repeated, deep imaging using the {\it James-Webb Spac…

astro-ph.CO2025★ 5 cited

Constraining Cosmology with Double-source-plane Strong Gravitational Lenses from the AGEL Survey

Duncan J. Bowden, Nandini Sahu, Anowar J. Shajib +17

Double-source-plane strong gravitational lenses (DSPLs), with two sources at different redshifts, are independent cosmological probes of the dark energy equation of state parameter…

astro-ph.CO2025

Cosmography with the Double Source Plane Strong Gravitational Lens AGEL150745+052256

Nandini Sahu, Anowar J. Shajib, Kim-Vy Tran +14

Strong gravitational lenses with two background sources at widely separated redshifts are a powerful and independent probe of cosmological parameters. We can use these systems, kno…

astro-ph.IM2025

The La Silla Schmidt Southern Survey

Adam A. Miller, Natasha S. Abrams, Greg Aldering +75

We present the La Silla Schmidt Southern Survey (LS4), a new wide-field, time-domain survey to be conducted with the 1 m ESO Schmidt telescope. The 268 megapixel LS4 camera mosaics…

astro-ph.GA2025★ 1 cited

The AGEL Survey Data Release 2: A Gravitational Lens Sample for Galaxy Evolution and Cosmology

Tania M. Barone, Keerthi Vasan G. C., Kim-Vy Tran +31

The ASTRO 3D Galaxy Evolution with Lenses (AGEL) Survey is an ongoing effort to spectroscopically confirm a diverse sample of gravitational lenses with high spatial resolution imag…

astro-ph.GA2025★ 8 cited

Unveiling a 36 Billion Solar Mass Black Hole at the Centre of the Cosmic Horseshoe Gravitational Lens

Carlos R. Melo-Carneiro, Thomas E. Collett, Lindsay J. Oldham +4

Supermassive black holes (SMBHs) are found at the centre of every massive galaxy, with their masses tightly connected to their host galaxies through a co-evolution over cosmic time…

astro-ph.CO2024★ 3 cited

The overconcentrated dark halo in the strong lens SDSS J0946+1006 is a subhalo: evidence for self interacting dark matter?

Wolfgang J. R. Enzi, Coleman M. Krawczyk, Daniel J. Ballard +1

The nature of dark matter is poorly constrained on subgalactic scales. Alternative models to cold dark matter, such as warm dark matter or self-interacting dark matter, could produ…

astro-ph.IM2021

Exploring the interpretability of deep neural networks used for gravitational lens finding with a sensitivity probe

C. Jacobs, K. Glazebrook, A. K. Qin +1

Artificial neural networks are finding increasing use in astronomy, but understanding the limitations of these models can be difficult. We utilize a statistical method, a sensitivi…

astro-ph.CO2020★ 373 cited

TDCOSMO IV: Hierarchical time-delay cosmography -- joint inference of the Hubble constant and galaxy density profiles

S. Birrer, A. J. Shajib, A. Galan +24

The H0LiCOW collaboration inferred via gravitational lensing time delays a Hubble constant km s, describing deflector mass density pro…

astro-ph.GA2019★ 56 cited

The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2017/2018 follow-up campaign: Discovery of 10 lensed quasars and 10 quasar pairs

C. Lemon, M. W. Auger, R. McMahon +65

We report the results of the STRong lensing Insights from the Dark Energy Survey (STRIDES) follow-up campaign of the late 2017/early 2018 season. We obtained spectra of 65 lensed q…

astro-ph.GA2018★ 105 cited

Finding high-redshift strong lenses in DES using convolutional neural networks

C. Jacobs, T. Collett, K. Glazebrook +63

We search Dark Energy Survey (DES) Year 3 imaging data for galaxy-galaxy strong gravitational lenses using convolutional neural networks. We generate 250,000 simulated lenses at re…

astro-ph.CO2016★ 354 cited

H0LiCOW I. Lenses in COSMOGRAIL's Wellspring: Program Overview

S. H. Suyu, V. Bonvin, F. Courbin +21

Strong gravitational lens systems with time delays between the multiple images allow measurements of time-delay distances, which are primarily sensitive to the Hubble constant that…