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

Autor:	Bera, Ankita, Ghara, Raghunath, Chatterjee, Atrideb, Datta, Kanan K., Samui, Saumyadip
Rok vydání:	2022
Předmět:	Astrophysics - Cosmology and Nongalactic Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.1007/s12036-022-09904-w
Popis:	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. Comment: 22 pages, 9 figures, Accepted for publication in Journal of Astrophysics and Astronomy(JoAA)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2210.12164 Zobrazit plný text záznamu View this record from Arxiv