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Signals from the early Universe: a comprehensive search for primordial features in Planck CMB datasets
We investigate the presence of primordial oscillatory features in measurements of CMB anisotropies through a systematic comparison of phenomenological templates. Building upon previous searches for primordial features using Planck data, we compare the full PR3 legacy release with the PR4 (NPIPE) processing to assess how the results depend on the choice of CMB maps and likelihood framework.
First detected by CosmosBrief 2d ago · earliest known source in monitored dataset: arXiv astro-ph
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