标题： 准圆轨道双星系统的陀螺引力记忆 显示英文标题

标题： Gyroscopic Gravitational Memory from quasi-circular binary systems

摘要： 引力波会使自由下落的自旋物体进动，从而导致净取向变化，称为陀螺记忆。 本文中，我们将考虑后牛顿框架中的孤立引力源，并计算主要后牛顿（PN）阶次的陀螺进动和记忆。 我们比较了两种竞争性贡献：自旋记忆和非线性螺旋流。 就进动率而言，前者是2PN振荡效应，而后者是4PN绝热效应。 然而，陀螺记忆涉及时间积分，这通过光速的五次幂增强了次主导绝热效应，导致1.5PN记忆效应。 我们明确计算了准圆轨道双星系统的主导效应，并获得了记忆在天球上的角依赖性。 显示英文摘要

摘要： Gravitational waves cause freely falling spinning objects to precess, resulting in a net orientation change called gyroscopic memory. In this paper, we will consider isolated gravitational sources in the post-Newtonian framework and compute the gyroscopic precession and memory at leading post-Newtonian (PN) orders. We compare two competing contributions: the spin memory and the nonlinear helicity flux. At the level of the precession rate, the former is a 2PN oscillatory effect, while the latter is a 4PN adiabatic effect. However, the gyroscopic memory involves a time integration, which enhances subleading adiabatic effects by the fifth power of the velocity of light, leading to a 1.5PN memory effect. We explicitly compute the leading effects for a quasi-circular binary system and obtain the angular dependence of the memory on the celestial sphere.