GalCatDiff applies category embeddings and a novel Astro-RAB block inside diffusion models to produce galaxy images whose color and size distributions match observations more closely than prior generative approaches.
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Joint strong-lensing plus dynamical modeling of SDSSJ1433+6007 with maximally flexible mass-sheet transformation yields H0 = 73.2^{+4.8}_{-4.7} km s^{-1} Mpc^{-1} at 6.5% precision under flat LambdaCDM with DESI Omega_m prior.
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Category-based Galaxy Image Generation via Diffusion Models
GalCatDiff applies category embeddings and a novel Astro-RAB block inside diffusion models to produce galaxy images whose color and size distributions match observations more closely than prior generative approaches.
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TDCOSMO XXV: A "soup-to-nuts" 6.5% $H_0$ measurement $-$ strong lensing and dynamics with a maximally flexible mass sheet
Joint strong-lensing plus dynamical modeling of SDSSJ1433+6007 with maximally flexible mass-sheet transformation yields H0 = 73.2^{+4.8}_{-4.7} km s^{-1} Mpc^{-1} at 6.5% precision under flat LambdaCDM with DESI Omega_m prior.