论文标题
在模拟中，单独初始条件对Lyman-$α$森林的影响
Effect of Separate Initial Conditions on the Lyman-$α$ Forest in Simulations
论文作者
论文摘要
使用一组高分辨率模拟，我们通过Lyman-$α$ Forest量化了物种特异性初始转移功能对IgM探针的影响。在H〜 {\ sc i} Reionization之后，我们专注于红移$ 2-6 $。我们探讨了这些初始条件对低密度IgM热态度量的影响：曲率，多普勒宽度截止和多普勒宽度分布。我们还检查了问题和通量功率谱，以及对温暖暗物质模型的约束的潜在后果。我们发现，曲率统计量最多受到$ \ of 2 \％$级别的影响，$ z = 6 $。截距的多普勒宽度截止参数受$ \％$的影响，而拟合斜率的$ \ of of y of y of of y of y ofl \％$ $，尽管这对样本变化是副本。多普勒宽度分布在$ z = 3 $时显示了$ \ of the of the box尺寸和分辨率的分布并未完全融合。在高红移和小尺度上，通量功率谱最多受$ \％$的影响。我们讨论使用模拟参数的数值收敛。
Using a set of high resolution simulations, we quantify the effect of species specific initial transfer functions on probes of the IGM via the Lyman-$α$ forest. We focus on redshifts $2-6$, after H~{\sc i} reionization. We explore the effect of these initial conditions on measures of the thermal state of the low density IGM: the curvature, Doppler width cutoff, and Doppler width distribution. We also examine the matter and flux power spectrum, and potential consequences for constraints on warm dark matter models. We find that the curvature statistic is at most affected at the $\approx2\%$ level at $z=6$. The Doppler width cutoff parameters are affected by $\approx5\%$ for the intercept, and $\approx8\%$ for the fit slope, though this is subdominant to sample variation. The Doppler width distribution shows a $\approx30\%$ effect at $z=3$, however the distribution is not fully converged with simulation box size and resolution. The flux power spectrum is at most affected by $\approx5\%$ at high redshift and small scales. We discuss numerical convergence with simulation parameters.
