Exploring the Epoch of Reionization: Insights from Next-Generation Telescopes

Shiming Liu

doi:10.54097/ce9phq86

Authors

Shiming Liu

DOI:

https://doi.org/10.54097/ce9phq86

Keywords:

Reionization, cosmic dawn, JWST, SKA, 21 cm cosmology.

Abstract

The Epoch of Reionization (EoR) is a pivot in the history of the universe when filled with neutral hydrogen gas transit to a universe filled with ionized gas due to large-scale ionization processes, and is one of the biggest mysteries in modern cosmology. Nevertheless, scientists remain uncertain on the overall timing of reionization, the primary cause of this energy, and the intricacies of the distribution of ionized bubbles, because there is no direct way to observe such a remote era. This paper review what scientists know about the EoR, present the shortcomings of current facilities, and demonstrate the transformative prospects for spectacular new facilities. This paper address what next-generation instruments such as the James Webb Space Telescope, the Square Kilometer Array, the Nancy Grace Roman Space Telescope, and Extremely Large Telescopes will accomplish in this realm. Such next generation instruments provide new sensitivity, resolution, and sky coverage. Key science goals, the advantage of multi-wavelength observations and some major challenges are also presented in the paper. This paper summarizes how the EoR may ultimately be understood, and stress that it has great potential for refining the state-of-theart in cosmology as well as in understanding of the galaxy evolution.

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