通过数值模拟揭示低质量亚光晕的生存

A. Aguirre-Santaella, M. Sánchez-Conde, R. Angulo, G. Ogiya, J. Stücker
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引用次数: 2

摘要

在这项工作中,我们进行了一套专门设计的数值模拟,以进一步阐明与伽马射线DM搜索相关的暗物质(DM)亚晕生存的质量尺度,这是一个目前受到激烈争论的话题。具体来说,我们采用了改进版本的DASH,一个GPU n体代码,以前所未有的精度研究银河系状晕内低质量亚晕的演变。我们模拟了具有不同质量、浓度和轨道特性的亚晕,并考虑了银河系本身引力势的影响。除了揭示低质量星系亚晕的存在之外,我们的结果还将提供详细的预测
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Shedding light on low-mass subhalo survival with numerical simulations
In this work, we carry out a suite of specially-designed numerical simulations to shed further light on dark matter (DM) subhalo survival at mass scales relevant for gamma-ray DM searches, a topic subject to intense debate nowadays. Specifically, we have employed an improved version of DASH, a GPU N-body code, to study the evolution of low-mass subhalos inside a Milky Way-like halo with unprecedented accuracy. We have simulated subhalos with varying mass, concentration, and orbital properties, and considered the effect of the gravitational potential of the Milky-Way galaxy itself. In addition to shedding light on the survival of low-mass galactic subhalos, our results will provide detailed predictions that
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