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Fig. 9


Spectral energy distribution of the γ-ray emissivity per gas nucleon found in the atomic gas of the Eridu cirrus, for an H I spin temperature of 100 K favoured by the fit (solid, diamonds) and for the optically thin H I case (dashed, circles). The blue squares show the average emissivity, qLIS, found in thelocal ISM for a spin temperature of 140 K (Casandjian 2015).

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