Fig. 14
Heating of the ISM per hydrogen atom from photoabsorption of X-rays from LMXBs (left panel) and HMXBs (right panel). For comparison the contribution from cosmic rays following Spitzer (1978) and Wolfire et al. (2003) and CXB is also shown. The X-ray (≳1 keV) contribution dominates compared with the cosmic rays (assuming the same energy density as the solar neighborhood) in a significant part of the Galaxy.
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