Shocks in the warm neutral medium - I. Theoretical model

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Table 1

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	0.1–2	cm⁻³	Preshock proton density^(a)
G₀	1.0	−		Radiation field scaling factor^(b)
$ζ_{H_{2}}$ $\[\zeta_{\mathrm{H}_2}\]$	3 × 0⁻¹⁶	−	s⁻¹	H₂ cosmic ray ionization rate
V_S	200	10–500	km s⁻¹	Shock velocity
B₀	1.0	0.1–10	μG	Initial transverse magnetic field

Notes. ^(a)Defined as $n_{H}^{0}$ $\[n_{\mathrm{H}}^0\]$ = n⁰(H) + 2n⁰(H₂) + n⁰(H⁺), 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 ultraviolet radiation field of Mathis et al. (1983).

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