Edge discontinuities in coadds cause significant shear biases only in extreme cases such as two-input-image stacks or 25% PSF size jumps, and these cases can be flagged and removed with a simple PSF variation statistic.
ArXiv e-prints(2025) 2501.05665
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DES BAO and supernova data combined with CMB favor evolving dark energy at about 3 sigma, challenging the cosmological constant model.
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Edges In Coadded Images
Edge discontinuities in coadds cause significant shear biases only in extreme cases such as two-input-image stacks or 25% PSF size jumps, and these cases can be flagged and removed with a simple PSF variation statistic.
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Challenges to the cosmological constant model following results from the Dark Energy Survey
DES BAO and supernova data combined with CMB favor evolving dark energy at about 3 sigma, challenging the cosmological constant model.