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Showing 2026 · astro-ph.COShow all
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astro-ph.CO2026
Forward analytical model for the optical selection bias on galaxy cluster lensing profiles
M. Costanzi, H. Y. Wu, J. H. Esteves +3
Cluster catalogs selected by optical properties are subject to selection biases, primarily arising from unresolved systems along the line of sight. These biases affect key observab…
astro-ph.CO2026
BICEP/Keck XXI: Constraints on Early-Universe Parity Violation from Multipole-Dependent Birefringence
Keck Collaboration, P. A. R. Ade, Zeeshan Ahmed +94
We present the first constraints on multipole-dependent cosmic birefringence using CMB polarization data from the BK18 dataset, which combines observations from BICEP2, Keck Array,…