标题： 广义相对论稳定性与旋转三轴中子星的引力波内容 显示英文标题

标题： General Relativistic Stability and Gravitational Wave Content of Rotating Triaxial Neutron Stars

摘要： 三轴中子星可以是可由地面干涉仪检测到的连续引力辐射源。 发出的引力波的振幅可能受到中子星内部流体动力学流动状态的显著影响。 在本研究中，我们检查了两个恒定静止质量序列上的最三轴模型，确认了它们的动力学稳定性。 我们还研究了准平衡三轴形状在各种导致不同流体流动的扰动下的响应。 从广义相对论可压缩的牛顿雅可比椭球体的类比出发，我们进行了德代克类型流动的模拟。 我们发现，在某些情况下，三轴中子星在演变为轴对称的过程中，类似于具有小旋转和引力波发射的黎曼S型椭球体。 目前的结果突显了从引力波内容的角度理解中子星内部流体流动的重要性。 显示英文摘要

摘要： Triaxial neutron stars can be sources of continuous gravitational radiation detectable by ground-based interferometers. The amplitude of the emitted gravitational wave can be greatly affected by the state of the hydrodynamical fluid flow inside the neutron star. In this work we examine the most triaxial models along two sequences of constant rest mass, confirming their dynamical stability. We also study the response of a triaxial figure of quasiequilibrium under a variety of perturbations that lead to different fluid flows. Starting from the general relativistic compressible analog of the Newtonian Jacobi ellipsoid, we perform simulations of Dedekind-type flows. We find that in some cases the triaxial neutron star resembles a Riemann-S-type ellipsoid with minor rotation and gravitational wave emission as it evolves towards axisymmetry. The present results highlight the importance of understanding the fluid flow in the interior of a neutron star in terms of its gravitational wave content.