Union through UNITY: Cosmology with 2000 SNe Using a Unified Bayesian Framework
D. Rubin; G. Aldering; M. Betoule; Andy Fruchter; Xiaosheng Huang; Alex Kim; C. Lidman; Eric V. Linder · 2025 · The Astrophysical Journal
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Abstract
Abstract Type Ia supernovae (SNe Ia) were instrumental in establishing the acceleration of the Universe’s expansion. By virtue of their combination of distance reach, precision, and prevalence, they continue to provide key cosmological constraints, complementing other cosmological probes. Individual SN surveys cover only over about a factor of 2 in redshift, so compilations of multiple SN data sets are strongly beneficial. We assemble an up-to-date “Union” compilation of 2087 cosmologically useful SNe Ia from 24 data sets (“Union3”). We take care to put all SNe on the same distance scale and u
Abstract by D. Rubin; G. Aldering; M. Betoule; Andy Fruchter; Xiaosheng Huang; Alex Kim; C. Lidman; Eric V. Linder, The Astrophysical Journal (2025) — licensed CC BY 4.0.
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Metadata source: OpenAlex · DOI 10.3847/1538-4357/adc0a5