Absorption Measurement of Hydrogen Molecules in the Early Universe
Absorption Measurement of Hydrogen Molecules in the Early Universe
复制标题
早期宇宙中氢分子的吸收测量
DOI：
10.1093/pasj/53.4.589
复制
发表时间：
2001
影响因子：
2.3
通讯作者：
H. Hirashita
中科院分区：
文献类型：
--
作者：
H. Shibai;T. Takeuchi;T. Rengarajan;H. Hirashita
我们研究了氢分子在吸收中的可观测性。在早期宇宙预计的贫金属条件下，氢分子的吸收效率变得与尘埃颗粒相当，甚至更高。如果我们能在分子气体云背后使用明亮的红外连续谱源，氢分子的吸收测量可能是探索正在收缩为第一代物体的原始气体云的重要技术。
We investigate the observability of hydrogen molecules in absorption. The absorption efficiency of hydrogen molecules becomes comparable with, or larger than, that of the dust grains in the metal-poor condition expected in the early Universe. If we can use bright infrared continuum sources behind the molecular-gas clouds, the absorption measurement of the hydrogen molecules could be an important technique to explore the primordial gas clouds that are contracting into first-generation objects.