The Thermal Evolution of the Postshock Layer in Pregalactic Clouds
Astrophysics
2009-10-30 v1
Abstract
We re-examine the thermal evolution of the postshock layer in primordial gas clouds. Comparing the time scales, we find that the evolutionary paths of postshock regions in primordial gas clouds can be basically understood in terms of the diagram drawn in the ionization degree vs temperature plane. The results obtained from the diagram are independent of the density in the case that we do not include photodissociation and photoionization. We also argue that the diagram is not only relevant to the case of the steady postshock flow, but also to the isochorically cooling gas.
Cite
@article{arxiv.astro-ph/9806187,
title = {The Thermal Evolution of the Postshock Layer in Pregalactic Clouds},
author = {Hajime Susa and Ryoichi Nishi and Hideya Uehara and Masako Yamada},
journal= {arXiv preprint arXiv:astro-ph/9806187},
year = {2009}
}
Comments
15pages, tar gzipped, 5 figures, PTP TeX (PTP style files are in http://www2.yukawa.kyoto-u.ac.jp/~ptpwww/ptptex-eng.ptp.html). Progress of Theoretical Physics, in press