论文标题
限制中子星里的镜子暗物质
Constraining Mirror Dark Matter Inside Neutron Stars
论文作者
论文摘要
我们检查了中子星室内装饰是普通物质和镜像暗物质的可能性。这是一种可以根据良好的增生机制（包括邦迪·霍伊尔（Bondi-Hoyle））自然设想的场景。我们表明，在中子星模型中包含镜像暗物质会降低给定状态方程的最大中子星质量，并且降低了给定中子星的潮汐变形性。这些一般特征表明，鉴于状态方程式，可以限制中子星中最大可行数量的镜像暗物质，以始终如一地实现现有的最大质量和潮汐可变形性约束。相反，使用潮汐可变形性测量来排除状态方程，需要对中子星中包含的镜像暗物质量进行假设。最后，镜面暗物质的存在也修改了将中子星的潮汐变形性与其紧凑性联系起来的通用关系。因此，在考虑异国情调模型时，例如本文讨论的模型是必不可少的。
We inspect the possibility that neutron star interiors are a mixture of ordinary matter and mirror dark matter. This is a scenario that can be naturally envisaged according to well studied accretion mechanisms, including the Bondi-Hoyle one. We show that the inclusion of mirror dark matter in neutron star models lowers the maximum neutron star mass for a given equation of state, and that it decreases the tidal deformability of a given neutron star. These general features imply that, given an equation of state, one can constrain the maximum viable amount of mirror dark matter in neutron stars in order to consistently fulfill existing maximum mass and tidal deformability constraints. Conversely, using tidal deformability measurements to rule out equations of state requires making assumptions on the amount of mirror dark matter contained in neutron stars. Finally, the presence of mirror dark matter also modifies the universal relation that links the tidal deformability of a neutron star to its compactness. Therefore, caution is mandatory when considering exotic models, such as the ones discussed in this paper.
