Parsec-scale cosmic-ray ionisation rate in Orion | Astronomy & Astrophysics (A&A)

Open Access

Fig. 5

Comparison between $ζ_{H_{2}}^{ion}$ $\zeta _{{{\rm{H}}_2}}^{{\rm{ion}}}$ and the column density N(H₂). The theoretical predictions for the CR propagation in molecular clouds are displayed as colour-coded lines (blue, green, and red lines; Padovani et al. 2022), while the $ζ_{H_{2}}^{ion}$ $\zeta _{{{\rm{H}}_2}}^{{\rm{ion}}}$ estimates in high-mass regions are displayed in grey (squares and diamonds; Sabatini et al. 2023). The estimates of $ζ_{H_{2}}^{ion}$ $\zeta _{{{\rm{H}}_2}}^{{\rm{ion}}}$ from our study are displayed as circles, colour-coded by T_ĸ.

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