论文标题
中间质量刺激性的偏心率增强效应：暗物质和黑孔质量
The eccentricity enhancement effect of intermediate-mass-ratio-inspirals: dark matter and black hole mass
论文作者
论文摘要
已经发现，中间质量的刺激性（IMRI）系统中的暗物质（DM）对恒星大量紧凑型物体的轨道偏心具有显着增强作用，例如黑洞（BH），可以通过太空引力测试，基于空间的引力（GW）侦探在内\ citep {2019phrvd.100d3013y}。在本文中，我们将研究IMRI在不同DM密度曲线和中心BH质量下偏心率的增强效应。我们的结果如下：$（1）$在一般DM尖峰分布方面，偏心率的增强基本上与幂律配置文件一致，这表明采用幂律概况是合理的； $（2）$在DM Spike的存在下，中心BH的不同质量将影响偏心率，这为我们发现BH的质量提供了一种新的方式； $（3）$考虑在存在和不存在DM Spike的情况下偏心率的变化，我们发现可以通过以约$ 10^{5} gm/c^{2} $测量偏心来区分DM模型。
It was found that the dark matter (DM) in the intermediate-mass-ratio-inspiral (IMRI) system has a significant enhancement effect on the orbital eccentricity of the stellar massive compact object, such as a black hole (BH), which may be tested by space-based gravitational wave (GW) detectors including LISA, Taiji and Tianqin in future observations \citep{2019PhRvD.100d3013Y}. In this paper, we will study the enhancement effect of the eccentricity for an IMRI under different DM density profiles and center BH masses. Our results are as follows: $(1)$ in terms of the general DM spike distribution, the enhancement of the eccentricity is basically consistent with the power-law profile, which indicates that it is reasonable to adopt the power-law profile; $(2)$ in the presence of DM spike, the different masses of the center BH will affect the eccentricity, which provides a new way for us to detect the BH's mass; $(3)$ considering the change of the eccentricity in the presence and absence of DM spike, we find that it is possible to distinguish DM models by measuring the eccentricity at the scale of about $10^{5} GM/c^{2}$.
