用LANTERN进行HACC宇宙学模拟的光锥构造
Lightcone Construction for HACC Cosmological Simulations with LANTERN
摘要：
本文档描述了LANTERN（通过sNapshoT intERpolatioN生成光锥）代码模块，这是我们目前从HACC [5]仿真产品生成光锥的方法。节中1，我们推导出定义在任何给定时间观察者可以看到的所有时空事件的条件（我们参数化观察者过去光锥的表面）。节中2，我们描述了我们如何应用这个条件来找到近似的光锥交叉时间的对象，其位置和速度是已知的，只有在离散时间快照。高阶效应和修正在第二节中讨论。3.秒4描述了允许生成任意光锥尺寸的模拟盒复制能力。
英文摘要：
This document describes the LANTERN (Lightcone generAtion via sNapshoT intERpolatioN) code module, our current approach for generating lightcones from HACC [5] simulation products. In sec. 1, we derive the condition which defines all spacetime events that can be seen by an observer at any given time (we parameterize the surface of the observer's past lightcone). In sec. 2, we describe how we apply this condition to find approximate lightcone-crossing times of objects whose positions and velocities are known only at discrete time snapshots. Higher order effects and corrections are discussed in sec. 3. Sec. 4 describes simulation box replication capabilities that allow generation of arbitrary lightcone sizes.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
