Time-delay cosmography provides an independent probe of the Hubble constant ($H_0$), but exploiting the high-resolution imaging of the James Webb Space Telescope (JWST) requires strong-lens models that capture complex source-galaxy morphologies and the point spread function (PSF) with high fidelity. Flexible source and...
Hrvoje Krizic, M. Millon, A. Galan et al.· 1 citation
We present the first measurement of the Hubble constant ($H_0$) from the quadruply-lensed quasar J1537$-$3010, which has optically-measured time delays at $\sim2 \%$ precision. We combine these delays with multi-band imaging data from the Hubble Space Telescope (HST) and model the system with two independent software a...
A. Galan, A. Schweinfurth, S. H. Suyu et al.· 2 citations
The distribution of matter along the same line of sight but external to the main lens, quantified by $\kappa_\mathrm{ext}$, is a key source of uncertainty in time delay cosmography and other applications of strong lensing, and must be independently estimated to avoid biasing the inferred value of the Hubble constant ($...
Daniel Johnson, Devon Williams, C. Fassnacht et al.· 0 citations
The internal mass structure of elliptical galaxies offers critical insights into galaxy formation, yet disentangling stellar mass from dark matter (DM) and determining the stellar initial mass function (IMF) remain challenging. We present a detailed analysis of ESO0286-G022 (z=0.0312), a rare nearby strong-lens system...
Han Wang, Jens Thomas, Mathias Lipka et al.· Astronomy & Astrophysics· 0 citations
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