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Studying Cosmic Dawn using redshifted HI 21-cm signal: A brief review

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arxiv 2210.12164 v1 pith:EJTG4EHD submitted 2022-10-21 astro-ph.CO

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keywords signalcosmicdawnreviewbackgroundotherunderstandingaddress
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In this review article, we briefly outline our current understanding of the physics associated with the HI 21-cm signal from cosmic dawn. We discuss different phases of cosmic dawn as the ambient gas and the background radiations evolve with the redshift. We address the consequences of several possible heating sources and radiation background on the global 21-cm signal. We further review our present perspective of other important aspects of the HI 21-cm signal such as the power spectrum and imaging. Finally, we highlight the future key measurements of the Square Kilometre Array and other ongoing/upcoming experiments that will enlighten our understanding of the early Universe.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. An Alcock-Paczynski Test on Reionization Bubbles for Cosmology

    astro-ph.CO 2025-02 conditional novelty 6.0 of 10

    Stacks of reionization HII bubbles act as standard spheres, allowing a forecast ~2% measurement of D_A H at z=7.5 with SKA-like 21-cm data.

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