标题： 探索中子星中玻色子暗物质的分布及其影响 显示英文标题

标题： Exploring the distribution and impact of bosonic dark matter in neutron stars

摘要： 中子星（NSs）内部存在暗物质（DM）可以通过不同的累积情景引入，其中暗物质和重子物质（BM）可能仅通过引力相互作用。 在这项工作中，我们考虑了非对称自相互作用的玻色子暗物质，它可以存在于中子星内部的密集核心中，或者形成围绕其的扩展晕。 可以看到，根据玻色子质量（$m_{\chi}$）、自耦合常数（$\lambda$）和暗物质比例（$F_{\chi}$），具有暗物质混合的中子星的最大质量、半径和潮汐变形率会发生显著变化。 暗物质的影响会导致一些由重子物质组分单独引起的可观测特征的修改。 在这里，我们关注广泛使用的描述中子星物质的核物质状态方程（EoS），称为DD2。 我们表明，通过将暗物质纳入中子星，相应的观测参数将会改变以与中子星最新的多信使观测一致。 可以看到，对于$m_{\chi}\gtrsim200$MeV 和$\lambda\lesssim2\pi$，具有$4\%\lesssim F_{\chi}\lesssim20\%$的暗物质混合中子星与最大质量和潮汐变形率的限制是一致的。 显示英文摘要

摘要： The presence of dark matter (DM) within neutron stars (NSs) can be introduced by different accumulation scenarios in which DM and baryonic matter (BM) may interact only through the gravitational force. In this work, we consider asymmetric self-interacting bosonic DM which can reside as a dense core inside the NS or form an extended halo around it. It is seen that depending on the boson mass ($m_{\chi}$), self-coupling constant ($\lambda$) and DM fraction ($F_{\chi}$), the maximum mass, radius and tidal deformability of NSs with DM admixture will be altered significantly. The impact of DM causes some modifications in the observable features induced solely by the BM component. Here, we focus on the widely used nuclear matter equation of state (EoS) called DD2 for describing NS matter. We show that by involving DM in NSs, the corresponding observational parameters will be changed to be consistent with the latest multi-messenger observations of NSs. It is seen that for $m_{\chi}\gtrsim200$ MeV and $\lambda\lesssim2\pi$, DM admixed NSs with $4\%\lesssim F_{\chi}\lesssim20\%$ are consistent with the maximum mass and tidal deformability constraints.