Total and X-ray cooling from the stellar wind bubble of simulation V04 as a function of time. Panel a) shows the total cooling luminosity of all gas with T> 2×10⁴, 10⁵, 10⁶, and 10⁷ K (for the lower temperatures most of this is not in at X-ray wavelengths). Panel b) shows the total (unattenuated) X-ray luminosity above energies E> 0.1, 0.5, 1.0, and 5.0 keV, calculated assuming collisional ionization equilbrium and solar abundances (see text for details). In both panels the red horizontal line shows the mechanical luminosity of the stellar wind, .