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Foregrounds and their mitigation

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arxiv 1909.12369 v1 pith:Q4CRDFDC submitted 2019-09-26 astro-ph.CO astro-ph.GAastro-ph.IM

Emma Chapman , Vibor Jelić This is my paper · ORCID
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keywords emissionforegroundsmitigationcosmologicalradioactivebrighterchapter
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The low-frequency radio sky is dominated by the diffuse synchrotron emission of our Galaxy and extragalactic radio sources related to Active Galactic Nuclei and star-forming galaxies. This foreground emission is much brighter than the cosmological 21 cm emission from the Cosmic Dawn and Epoch of Reionization. Studying the physical properties of the foregrounds is therefore of fundamental importance for their mitigation in the cosmological 21 cm experiments. This chapter gives a comprehensive overview of the foregrounds and our current state-of-the-art knowledge about their mitigation.

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Cited by 1 Pith paper

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  1. Foreground Subtraction with a Tensor-Based Oriented Singular Value Decomposition Method for HI Experiments

    astro-ph.IM 2026-08 conditional novelty 5.0 of 10

    A tensor-oriented singular value decomposition can subtract radio foregrounds from 21 cm intensity mapping data while preserving more cosmological signal than standard PCA.

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