论文标题
宇宙空隙内的光环偏置
The halo bias inside cosmic voids
论文作者
论文摘要
暗物质光环和星系的偏见是许多宇宙学分析中的关键量。在这项工作中，使用大型宇宙学模拟，我们探讨了宇宙空隙中的光环质量功能和光晕偏置。我们首次表明它们沿空白曲线依赖于比例依赖性，并提供了halo质量函数和空中偏置的预测性理论模型，在voids内部恢复了后者的恢复，并且针对模拟数据提供了1％的准确性。这些发现可能有助于阐明空隙中光环形成的动力学，并改善对正在进行的和即将进行的星系调查的几个空隙统计数据的分析。
The bias of dark matter halos and galaxies is a crucial quantity in many cosmological analyses. In this work, using large cosmological simulations, we explore the halo mass function and halo bias within cosmic voids. For the first time to date, we show that they are scale-dependent along the void profile, and provide a predictive theoretical model of both the halo mass function and halo bias inside voids, recovering for the latter and 1% accuracy against simulated data. These findings may help shed light on the dynamics of halo formation within voids and improve the analysis of several void statistics from ongoing and upcoming galaxy surveys.
