标题： 一种用于计算非同步中子星双星拟平衡构型的相对论形式主义 显示英文标题

标题： A relativistic formalism to compute quasi-equilibrium configurations of non-synchronized neutron star binaries

摘要： 将完美流体力学的欧拉方程广义相对论版本应用于一对相互绕转的中子星系统。在此系统的准平衡演化阶段，可以推导出某些中子星流体速度场的第一个运动积分，包括相对于轨道运动的（学术性）共旋转情况（同步双星）以及与轨道运动反向旋转的实际情况。导致后一种构型的速度场可以通过求解三维矢量和标量泊松方程来计算。 显示英文摘要

摘要： A general relativistic version of the Euler equation for perfect fluid hydrodynamics is applied to a system of two neutron stars orbiting each other. In the quasi-equilibrium phase of the evolution of this system, a first integral of motion can be derived for certain velocity fields of the neutron star fluid including the (academic) case of co-rotation with respect to the orbital motion (synchronized binaries) and the realistic case of counter-rotation with respect to the orbital motion. The velocity field leading to this latter configuration can be computed by solving three-dimensional vector and scalar Poisson equations.