论文标题
中子星中的动态潮汐：地壳的影响
Dynamical tides in neutron stars: The impact of the crust
论文作者
论文摘要
我们考虑中子恒星在灵感二进制中的动态潮汐反应，重点是恒星弹性外壳的影响。在牛顿重力的背景下，我们将弹性方面添加到问题的理论表述中，并量化不同类别振荡模式的动态激发。结果表明，基本模式主导潮汐响应的期望，并表明通常在静态极限中出现通常的潮汐变形性（和爱情数字）。此外，我们考虑到在多大程度上可能会激发不同模式到超过地壳的破裂应变的水平（局部）。结果表明，基本模式可能会在Inspiral的后期骨折。第一个重力模式也是如此，该重力模式达到了强烈分层的恒星中的断裂阈值。在我们的流体海洋模型中，与外壳过渡相关的界面模式也可能引起外壳断裂。如果发生这种情况，它会在较低的轨道频率下以较早的灵感来进行。
We consider the dynamical tidal response of a neutron star in an inspiralling binary, focussing on the impact of the star's elastic crust. Within the context of Newtonian gravity, we add the elastic aspects to the theoretical formulation of the problem and quantify the dynamical excitation of different classes of oscillation modes. The results demonstrate the expectation that the fundamental mode dominates the tidal response and show how the usual tidal deformability (and the Love number) emerge in the static limit. In addition, we consider to what extent the different modes may be excited to a level where the breaking strain of the crust would be exceeded (locally). The results show that the fundamental mode may fracture the crust during the late stages of inspiral. This is also the case for the first gravity mode, which reaches the breaking threshold in strongly stratified stars. In our models with a fluid ocean, interface modes associated with the crust-ocean transition may also induce crust fracture. If this happens it does so earlier in the inspiral, at a lower orbital frequency.
