C I/CO ratio in interstellar dense clouds and decay photons of dark matter

Astronomy and Astrophysics – Astronomy

Scientific paper

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Abundance, Carbon, Dark Matter, Interstellar Matter, Molecular Clouds, Photons, Carbon Monoxide, Cosmochemistry, H I Regions

Scientific paper

The decay photons from uniformly distributed dark matter of mass 27.7 eV, density 5 x 10 exp 7/cu cm and lifetime 1.5 x 10 exp 23 s can dissociate CO in dense clouds to give the high observed C I/CO ratio, provided the destruction of C I through neutral reactions with O2, OH and CH is negligible. The consequences of the presence of these photons from dark matter on the ionization and heating of interstellar diffuse and dense clouds are also examined.

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