奇异致密天体共振潮汐的模拟与探测
Modeling and detecting resonant tides of exotic compact objects
摘要：
在广义相对论中，黑洞的事件视界吸收了所有下落的辐射。任何相反的观测都会立即挑战天体物理学上的黑洞是由真空克尔几何描述的这一期望。如果一个假定的黑洞确实反射了一部分进入的辐射，它的准正规模式结构就会急剧改变。低频模式可以引入共振激发期间的螺旋的二元系统。我们研究了由此产生的引力波信号的相移。基于中子星的结果，我们得到了一个与模型无关的相移表达式，它只依赖于紧凑物体的准正规模和勒夫数。我们发现，在高信噪比事件（$\sim 10^3$）中，用爱因斯坦望远镜可以检测到非对称双星的相移，但到目前为止还不能探索普朗克尺度。
英文摘要：
The event horizon of a black hole in general relativity absorbs all infalling radiation. Any observation of the contrary would immediately challenge the expectation that astrophysical black holes are described by the vacuum Kerr geometry. If a putative black hole does reflect part of the ingoing radiation, its quasinormal mode structure is drastically altered. Low frequency modes can be introduced that are resonantly excited during the inspiral of a binary system. We study the resulting phase shift of the gravitational wave signal. Building on neutron star results, we obtain a model-independent expression for the phase shift that depends only on quasinormal modes and Love numbers of the compact object. We find that the phase shift might be detectable with Einstein Telescope for asymmetric binaries in high signal-to-noise events ($\sim 10^3$), but by far cannot explore the Planck scale.
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