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Hierarchical Bayesian detection algorithm for early-universe relics in the cosmic microwave background

Hierarchical Bayesian detection algorithm for early-universe relics in the cosmic microwave background

A number of theoretically well-motivated additions to the standard cosmological model predict weak signatures in the form of spatially localized sources embedded in the cosmic microwave background (CMB) fluctuations. We present a hierarchical Bayesian statistical formalism and a complete data analysis pipeline for testing such scenarios. We derive an accurate …