标题： 引力波观测下的混有暗物质的中子星性质：双流体方法 显示英文标题

标题： Dark matter admixed neutron star properties in the light of gravitational wave observations: a two fluid approach

摘要： 我们研究了密度依赖的暗物质对中子星质量、半径和潮汐变形率的影响。 核物质（普通物质）以及费米子暗物质部门在一个平均场模型中被考虑。 我们采用双流体形式来探讨暗物质对中子星性质的影响。 在双流体图像中，暗物质与核物质之间没有直接相互作用。 相反，这两个部门仅通过引力相互作用而相互作用。 核物质部门由“FSU2R”参数化中的$\sigma-\omega-\rho$介子相互作用描述。 在暗物质部门中，我们使用贝叶斯参数优化技术来确定暗物质状态方程中的未知参数。 在双流体图像中，我们求解耦合的托尔曼-奥本海默-沃尔科夫（TOV）方程以获得暗物质混合中子星（DANS）的质量和半径。 我们还评估了密度依赖的暗物质部门对暗物质混合中子星（DANS）的潮汐变形率的影响。 显示英文摘要

摘要： We consider the effect of density dependent dark matter on the neutron star mass, radius, and tidal deformability. Nuclear matter (normal matter) as well as the fermionic dark matter sector is considered in a mean field model. We adopt the two fluid formalism to investigate the effect of dark matter on the neutron star properties. In the two fluid picture, there is no direct interaction between the dark matter and the nuclear matter. Rather these two sectors interact only through gravitational interaction. The nuclear matter sector is described by the $\sigma-\omega-\rho$ meson interaction in the "FSU2R" parameterization. In the dark matter sector, we use the Bayesian parameter optimization technique to fix the unknown parameters in the dark matter equation of state. In the two fluid picture, we solve the coupled Tolman-Oppenheimer-Volkoff (TOV) equations to obtain the mass and radius of dark matter admixed neutron stars (DANSs). We also estimate the effect of the density dependent dark matter sector on the tidal deformability of dark matter admixed neutron stars (DANSs).