e><span></span><span class="c1"># pop III Ng et al. 2022</span>
<span class="n">cbc</span> <span class="o">=</span> <span class="n">CBCSourceRedshiftDistribution</span><span class="p">(</span>
    <span class="n">z_min</span><span class="o">=</span><span class="n">z_min</span><span class="p">,</span>
    <span class="n">z_max</span><span class="o">=</span><span class="n">z_max</span><span class="p">,</span>
    <span class="n">merger_rate_density</span><span class="o">=</span><span class="s2">&quot;merger_r