This is an example of a gas in collisional ionization equilibrium in which only the temperature is varied. The gas temperature is varied over a very broad range and only the cosmic background and cosmic rays are included. The hydrogen density and gas kinetic temperature are specified and a single zone is computed. The temperature and cooling divided by n(H)2 are printed. This was used to create a figure in Hazy.
This figure shows the total cooling over the density squared.. The x-axis is the log of the gas temperature (K). The y-axis is the cooling divided by the square of the density (erg s-1 cm3).
last modified 19 July, 2008