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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.
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