3D chemical structure of the diffuse turbulent ISM II -- Origin of CH${}^{+}$, new solution to an 80 years mystery

Benjamin Godard, Guillaume Pineau Des Forêts, Patrick Hennebelle +2

Aims: The large abundances of CH${}^{+}$ in the diffuse interstellar medium (ISM) are a long standing issue of our understanding of the thermodynamical and chemical states of the gas.…