标题： 再电离时期不均匀星系间介质中高能电子的能量耗散 显示英文标题

标题： Energy dissipation of energetic electrons in the inhomogeneous intergalactic medium during the epoch of reionization

摘要： 我们研究了宇宙再电离时期，高能电子在非均匀星系际介质（IGM）中的时变能量耗散。除了原子过程外，我们还考虑了电子与宇宙微波背景（CMB）光子之间的逆康普顿（IC）散射，这是高于几个MeV的电子的主要能量损失通道。我们表明：（1）对IGM的影响具有局部（原子过程）和非局部（IC辐射）成分；（2）氢和氦电离之间的能量分布取决于初始电子能量；（3）局域重子密度超涨落显著影响每个通道的能量分配比例；（4）原子截面的相对论效应在宇宙再电离时期变得重要。我们将代码以开源形式发布，供社区进一步修改使用。 显示英文摘要

摘要： We explore a time-dependent energy dissipation of the energetic electrons in the inhomogeneous intergalactic medium (IGM) during the epoch of cosmic reionization. In addition to the atomic processes we take into account the Inverse Compton (IC) scattering of the electrons on the comic microwave background (CMB) photons, which is the dominant channel of energy loss for the electrons with energies above a few MeV. We show that: (1) the effect on the IGM has both local (atomic processes) and non-local (IC radiation) components; (2) the energy distribution between Hydrogen and Helium ionizations depends on the initial electron energy; (3) the local baryon overdensity significantly affects the fractions of energy distributed in each channel; and (4) the relativistic effect of atomic cross section become important during the epoch of cosmic reionization. We release our code as open source for further modification by the community.