Reionization and Cosmology with 21-cm Fluctuations
Reionization and Cosmology with 21-cm Fluctuations
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DOI：
10.1146/annurev-astro-081309-130936
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发表时间：
2009-10
影响因子：
33.3
通讯作者：
M. Morales;J. Wyithe
中科院分区：
文献类型：
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作者：
M. Morales;J. Wyithe
通过21厘米红移线测量中性氢的空间分布有望彻底改变我们对再电离时代和第一批星系的认识，并可能为从红移1<z<4观测宇宙学提供一个强大的新工具。本文综述了再电离时代的理论认识、21厘米层析成像在宇宙学中的应用和再电离后暗能量状态方程的测量、21厘米层析成像和再电离后宇宙学机器的仪器和观测技术等方面的最新进展。我们特别强调第一代21厘米波动仪器的预期信号和观测能力。
Measurement of the spatial distribution of neutral hydrogen via the redshifted 21-cm line promises to revolutionize our knowledge of the epoch of reionization and the first galaxies, and may provide a powerful new tool for observational cosmology from redshifts 1<z<4. In this review we discuss recent advances in our theoretical understanding of the epoch of reionization (EoR), the application of 21-cm tomography to cosmology and measurements of the dark energy equation of state after reionization, and the instrumentation and observational techniques shared by 21-cm EoR and postreionization cosmology machines. We place particular emphasis on the expected signal and observational capabilities of first generation 21-cm fluctuation instruments.