论文标题
改进的混合暗物质光环模型用于超轻轴
Improved Mixed Dark Matter Halo Model for Ultralight Axions
论文作者
论文摘要
我们提供了一个完整的光环模型，用于混合暗物质，由冷暗物质（CDM）和超轻轴突样颗粒（ULAS）组成。我们的模型将ULA视为CDM的有偏见的示踪剂，类似于大规模中微子和中性氢的处理。该模型解释了CDM宿主光环周围ULA的聚类，并完全模拟了这两个组件的互相关。模型输入包括ULA牛仔裤量表和孤子密度曲线。 Our model can be used to predict the matter power spectrum, $P(k)$, on non-linear scales for sub-populations of ULAs across the mass range $10^{-33}\text{ eV}\leq m\leq 10^{-21}\text{ eV}$, and can be calibrated against future mixed DM simulations to improve its accuracy.混合的DM光环模型还允许我们评估各种近似值的重要性。
We present a complete halo model for mixed dark matter composed of cold dark matter (CDM) and ultralight axion-like particles (ULAs). Our model treats ULAs as a biased tracer of CDM, in analogy to treatments of massive neutrinos and neutral hydrogen. The model accounts for clustering of ULAs around CDM host halos, and fully models the cross correlations of both components. The model inputs include the ULA Jeans scale, and soliton density profile. Our model can be used to predict the matter power spectrum, $P(k)$, on non-linear scales for sub-populations of ULAs across the mass range $10^{-33}\text{ eV}\leq m\leq 10^{-21}\text{ eV}$, and can be calibrated against future mixed DM simulations to improve its accuracy. The mixed DM halo model also allows us to assess the importance of various approximations.
