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than 1 h − 1 cMpc and virtually all remain within 2 h − 1 cMpc, i.e. much less than the typical dimension of an ionized region at the same redshift (see also Busch et al. 2020). As a reference ...
clumping factor, number density of baryons in the simulation cell, number fraction of hydrogen, and the X-ray ionization rate per baryon, respectively, and $$\begin{eqnarray*} \frac{ 3 }{ 2 } ( 1 {+}x_\mathrm{ e ...
sources of the theoretical or experimental data on which these fits are based. Table 3 . Chemical reactions in the six species network. Reaction . Reference . . . . Data . Fit . H + e− → H + + e− + e− 1 2 H ...
}}{A} = -2.336\times 10^{-8}\frac{n_{\rm H }}{T_4^{ 3 / 2 }}( 1 +0.0663T_4){\rm e}^{-47.34/T_4} \, {\rm s }^{- 1 } \end{eqnarray} (24)over the range T4 ...
transport solver: For a 12 h − 1 Mpc box with 2 × 2563 particles, simulations in which the RT voxels have a comoving side length of (375, 187.5) h − 1 kpc emit (2.44, 3.02) ionizing photons per hydrogen atom ...
et al. 2017; D’Aloisio et al. 2018) provide constraints on the power at the relevant scales (10− 3 > k > 10− 1 s km− 1 , 10− 1 > k > 10 h − 1 Mpc) and therefore may already tell us something about the effects ...
) ionizing photons that is being produced per second in the halo (|$Q_{\rm H \, \small {I}} [\mathrm{ s }^{- 1 }]$|); (vii) the gas clumping factor, C = 〈ρ2〉/〈ρ〉 2 , where ρ is the gas density averaged over all gas ...
: Strömgren sphere in a H + He medium We have set up a test equivalent to Test 2 of the RT Code Comparison Project (RTCCP; Iliev et al. 2006a). The test simulates the evolution of an ionized region around ...
^{-18} \, {\rm cm}^{ 2 }$|. For a given photon energy Eγ, the temperature change ΔT of the gas as it is ionized should be \begin{eqnarray*} E_{\gamma } - E_{{\rm{ H \,{\small I}}}} \approx \frac{ 3 k_{\rm b ...
winds driven by star formation and the enrichment of the universe with metals synthesized in the stars. Our reference simulation uses 2 × 5123 dark matter and gas particles in a box of size 25 h − 1 ...
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