标题： 潮汐激发的变分形式：非旋转、同熵星 显示英文标题

标题： A variational formalism for tidal excitation: non-rotating, homentropic stars

摘要： 我们提出了一种变分形式主义来描述线性非相对论范围内脉动恒星与点质量伴星的动力学演化。 这包括正常模的激发以及模对轨道的反作用力。 针对任意流体构型的一般形式主义被阐述，并进一步专门化为同熵势流。 我们的形式主义明确识别并守恒了能量和角动量。 我们还考虑了高达7/2后牛顿阶次的轨道修正。 显示英文摘要

摘要： We present a variational formalism for describing the dynamical evolution of an oscillating star with a point-mass companion in the linear, non-relativistic regime. This includes both the excitation of normal modes and the back-reaction of the modes on the orbit. The general formalism for arbitrary fluid configurations is presented, and then specialized to a homentropic potential flow. Our formalism explicitly identifies and conserves both energy and angular momentum. We also consider corrections to the orbit up to 7/2 post-Newtonian order.