Shocks in the warm neutral medium - II. Origin of neutral carbon at high pressure

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Table 2

Main parameters of the shock code, standard model, and range of values explored in this work.

Name	Standard	Range	Unit	Definition
$n_{H}^{0}$ $\[n_{\mathrm{H}}^0\]$	1.0	10⁻¹−2	cm⁻³	Pre-shock proton density^(a)
G₀	1	−		Radiation field scaling factor^(b)
$ζ_{H_{2}}$ $\[\zeta_{\mathrm{H}_2}\]$	3 × 10⁻¹⁶	−	s⁻¹	H2 cosmic ray ionisation rate
V_s	80	10–200	km s⁻¹	Shock velocity
B₀	1.0	0.1–10	μG	Initial transverse magnetic field

Notes. ^(a)Defined as $n_{H}^{0} = n^{0} (H) + 2 n^{0} (H_{2}) + n^{0} (H^{+})$ $\[n_{\mathrm{H}}^0=n^0(\mathrm{H})+2 n^0\left(\mathrm{H}_2\right)+n^0\left(\mathrm{H}^{+}\right)\]$ , where n⁰(H), n⁰(H₂), and n⁰(H⁺) are the initial densities of H, H₂, and H⁺. ^(b)The scaling factor, G₀, is applied to the standard UV radiation field of Mathis et al. (1983).

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