NSF-Simons AI for the Sky Institute
Testing Lens Models of PLCK G165.7+67.0 Using Lensed SN H0pe

Seven distinct lens models of the galaxy cluster PLCK G165.7+67.0 systematically over-predict the absolute magnifications of the lensed Type Ia supernova H0pe. This overestimation results in a reconstructed intrinsic brightness for SN H0pe that is consistently >1 magnitude (approximately 4.5σ) higher than expected from standard cosmological models.

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