activity
20192026
most citedUsing quasar X-ray and UV flux measurements to constrain cosmological model parameters

101 citations · 773 across the 20 of their papers we have counts for

collaborators

21 papers

astro-ph.CO2026

Strong Lensing Tomography: Double and pseudo multi-source plane strong gravitational lensing to constrain dark energy

Paras Sharma, Simon Birrer, Narayan Khadka +12

Tomographic measurements of gravitational lensing with different lens and source redshift distributions contain crucial information about the universe's relative expansion rate, an…

astro-ph.IM2026

The Rubin Observatory Target-of-Opportunity System in the First Year of Operations

Sean Patrick MacBride, R. Lynne Jones, Peter Yoachim +41

The NSF/DOE Vera C. Rubin Observatory is a discovery machine, with unprecedented survey speed, which can be used to identify exotic astrophysical transients. In its prime mission,…

astro-ph.IM2026

An overview of stray light findings and interpretation during on-sky commissioning of LSSTCam

Gabriele Rodeghiero, Alex Drlica-Wagner, Alessio Taranto +78

Wide-field telescopes are intrinsically difficult to shield from unwanted stray and scattered light, while the search to identify sources of contaminating light is frequently a cha…

astro-ph.CO2026

SLSim: a strong lensing population simulation package

Narayan Khadka, Simon Birrer, Henry Best +45

Gravitational lensing offers unique insights into cosmology by bending light around massive objects. Strong gravitational lensing, in particular, produces magnified and often multi…

astro-ph.CO2025★ 2 cited

Investigating the Dark Energy Constraint from Strongly Lensed AGN at LSST-Scale

Sydney Erickson, Martin Millon, Padmavathi Venkatraman +12

Strongly lensed Active Galactic Nuclei (AGN) with an observable time delay can be used to constrain the expansion history of the Universe through time-delay cosmography (TDC). As t…

astro-ph.CO2024★ 2 cited

Breaking the mass-sheet degeneracy in strong lensing mass modeling with weak lensing observations

Narayan Khadka, Simon Birrer, Alexie Leauthaud +1

The Hubble constant (), a crucial parameter in cosmology, quantifies the expansion rate of the universe so its precise measurement is important to understand the fundamental d…