Lyman-Alpha Forest Simulations Used For The Measurement Of The Smoothing Scale Of The Intergalactic Medium

This repository contains data from the hydrodynamic and dark-matter simulations used in Rorai et al.2017 to measure the pressure smoothing scale of the intergalactic medium (IGM) using the lyman alpha forest from close quasar pairs. The data includes : synthetic spectra (at z~2,2.4,3,3.6) of the transmitted lya flux from a grid of hydrodynamic model of the IGM assuming various thermal and reionization histories; Velocity and density sight lines from a dark matter simulation (at the same redshifts), with different values of the smoothing parameters, which can be used to calculate the lyman alpha flux for the desired values of the thermal parameters (as well as of the mean flux); More information can be found in the README file本仓库包含Rorai等人2017年研究中使用的流体动力学与暗物质模拟数据，该研究通过近邻类星体对的莱曼alpha森林（Lyman-alpha forest）测量星系际介质（intergalactic medium, IGM）的压强平滑尺度。 数据包含： 基于不同热历史与再电离历史假设的星系际介质流体动力学模型网格，生成的红移z≈2、2.4、3、3.6处的透射莱曼alpha通量合成光谱； 同一红移下暗物质模拟得到的视线方向速度与密度剖面，其平滑参数取不同取值，可用于计算给定热参数（以及平均通量）下的莱曼alpha通量。 更多详细信息可参阅README文件。