论文标题
银河分布在天体捕获暗物质中的影响
Impact of galactic distributions in celestial capture of dark matter
论文作者
论文摘要
对暗物质的天体捕获为约束其颗粒特性提供了有用的手柄。捕获的形式主义对天体附近暗物质的相空间分布敏感。本文旨在系统地研究不确定性的影响以及宇宙学模拟对在各种天体内捕获暗物质颗粒的速率的影响。超越了麦克斯韦 - 博尔茨曼分布或标准光晕模型的框架，我们采用了由观测或宇宙学模拟动机的务实暗物质速度分布。在标准光晕型号的范围内，我们报告了捕获率的最大$ \ sim 20 \％$更改。如果银河光环中的暗物质颗粒被偏爱，当使用良好的和复杂的宇宙学模拟来提取其参数值时，则该数字可以达到$ \ sim 200 \％$。
Celestial capture of dark matter provides a useful handle for constraining its particulate properties. The capture formalism is sensitive to the phase space distribution of dark matter in the vicinity of the celestial object. This article aims to systematically study the impact of uncertainties and the influence of cosmological simulations on the rate at which dark matter particles are captured inside a variety of celestial objects. Going beyond the framework of the Maxwell-Boltzmann distribution or the standard halo model, we take up pragmatic dark matter velocity distributions motivated by observations or cosmological simulations. Within the limits of the standard halo model, we report a maximum $\sim 20\%$ change in the capture rate. This number can go up to $\sim 200\%$ if dark matter particles within the galactic halo are favored to have an empirical velocity distribution profile when well-resolved and sophisticated cosmological simulations are employed to extract their parametric values.
