Upcoming new era of 21 cm cosmology based on SKA
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(2020)cite arxiv:2002.00572Comment: 6 pages, 3 figures.

In order to precisely measure the cosmological parameters and answer the fundamental questions in cosmology, it is necessary to develop new, powerful cosmological probes, in addition to the proposed next-generation optical survey projects. The neutral hydrogen 21 cm sky surveys will definitely provide a promising tool to study the late-universe evolution, helping in elucidating the nature of dark energy. The Square Kilometre Array, the largest radio telescope in the world, which is scheduled to be constructed in the near future, will undoubtedly push the 21 cm cosmology into a new era, and greatly promote the development of cosmology in the forthcoming decades.
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