Preprint
Sep 2026
ALPACA I: Controlling source and PSF systematics in JWST time-delay cosmography with differentiable lens modeling
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