The Thermal Evolution of the Postshock Layer

نویسندگان

  • Hajime Susa
  • Hideya Uehara
  • Ryoichi Nishi
  • Masako Yamada
  • H. Susa
  • H. Uehara
  • R. Nishi
  • M. Yamada
چکیده

We re-examine the thermal evolution of the postshock layer in primordial gas clouds. Comparing the time scales, we nd that the evolutionary paths of postshock regions in primordial gas clouds are basically understood by the diagram drawn on ionization degree v.s. temperature plane. The results obtained from the diagram are independent of the density, in case we do not include photodissociation and photoionization. We also argue that the diagram is not only relevant to the case of the steady postshock ow, but also to the isochorically cooling gas.

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تاریخ انتشار 2007