A Novel CMB Component Separation Method: Hierarchical Generalized Morphological Component Analysis
Monthly Notices of the Royal Astronomical Society(2020)
摘要
We present a novel technique for cosmic microwave background (CMB) foreground subtraction based on the framework of blind source separation. Inspired by previous work incorporating local variation to generalized morphological component analysis (GMCA), we introduce hierarchical GMCA (HGMCA), a Bayesian hierarchical graphical model for source separation. We test our method on Nside = 256 simulated ...
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关键词
methods: data analysis,cosmic background radiation
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