Studying the Reionization Epoch with QSO Absorption Lines
Studying the Reionization Epoch with QSO Absorption Lines
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发表时间：
2019-03
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通讯作者：
G. Becker;Anson D’Aloisio;F. Davies;J. Hennawi;R. Simcoe
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作者：
G. Becker;Anson D’Aloisio;F. Davies;J. Hennawi;R. Simcoe
类星体光谱中的吸收信号是我们研究高红移星系和星际环境的最强大的工具之一。随着在z>；7上发现类星体，类星体的吸收线现在正在利用氢的莱曼森林和重元素吸收体在多个战线上追踪再电离的结束阶段。利用大型光学/红外望远镜进行的新一代类星体吸收线研究将详细揭示第一批星系是如何从宇宙网中出现的，如何改变它们的星系圈和星系间环境，以及如何完成宇宙的最后一次重大相变。这些努力将补充其他即将到来的再电离研究，如JWST、ALMA和红移21厘米实验。
Absorption signatures in the spectra of QSOs are one of our most powerful tools for studying galactic and intergalactic environments at high redshifts. With the discovery of QSOs out to z > 7, QSO absorption lines are now tracing the end stages of reionization on multiple fronts using the hydrogen Lyman-$\alpha$ forest and heavy element absorbers. Next-generation QSO absorption line studies with large optical/IR telescopes will reveal in detail how the first galaxies emerged form the cosmic web, transformed their circum- and inter-galactic environments, and completed the last major phase transition of the Universe. These efforts will complement other upcoming studies of reionization, such as those with JWST, ALMA, and redshifted 21cm experiments.