Absorption Measurement of Hydrogen Molecules in the Early Universe
Astrophysics
2015-06-24 v1
Abstract
We investigate the observability of hydrogen molecules in absorption. The absorption efficiency of the hydrogen molecules become 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 will be an important technique to explore the primordial gas clouds that are contracting into first-generation objects.
Keywords
Cite
@article{arxiv.astro-ph/0106102,
title = {Absorption Measurement of Hydrogen Molecules in the Early Universe},
author = {Hiroshi Shibai and Tsutomu T. Takeuchi and T. N. Rengarajan and Hiroyuki Hirashita},
journal= {arXiv preprint arXiv:astro-ph/0106102},
year = {2015}
}
Comments
5 pages, to be published in PASJ, August 25, 2001