The Cosmic Dawn and the Epoch of Reionization
The Cosmic Dawn and the Epoch of Reionization
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宇宙黎明和再电离时代
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
J. Rubiño
中科院分区：
文献类型：
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作者：
J. Diego;C. Hernández;D. Herranz;E. Martinez;J. Rubiño
在本章中，我们简要地描述了HI 21厘米线背后的物理原理，即HI气体与电离等离子体和宇宙微波背景的相互作用，以及随着环境密度和紫外线背景随宇宙时间的变化，系统所经历的不同阶段。我们还讨论了与IGM的金属富集有关的问题以及对星系形成和演化模型的影响。我们简要地讨论了与其他再电离探测器（如E-ELT， JWST和ALMA）可能的协同作用，并通过列出一些描述宇宙中某种类型的能量注入的宇宙学场景来结束，这些场景的理解SKA应该能够（至少部分地）做出贡献。
In this chapter we briefly describe the physics behind the HI 21 cm line in terms of the interplay of the HI gas with the ionized plasma and the Cosmic Microwave Background, and the different phases the system undergoes as the ambient density and UV background evolve with cosmological time. We also address the problematics associated to the metal enrichment of the IGM and the implications for the models of galaxy formation and evolution. We briefly discuss possible synergies with other reionization probes like E-ELT, JWST and ALMA, and conclude by listing a number of cosmological scenarios describing some type of energetic injection in the Universe, scenarios to whose understanding SKA should be able to (at least partially) contribute.