论文标题
在灵感二进制中子星中探测地壳崩溃
Probing Crust Meltdown in Inspiraling Binary Neutron Stars
论文作者
论文摘要
由于最近测量了潮汐变形性和半径，现在可以更好地理解中子星的状态和结构的核方程。在这里，我们表明，通过二元灵感中的谐振潮汐激发，中子地壳通常会经历弹性到塑料的过渡，从而导致地壳加热并最终崩溃。此过程可能会诱导$ \ sim \ Mathcal {O}（0.1）$在重力波形中的相移。检测这种地壳崩溃的时机和诱导的相移将揭示地壳结构，例如核心壳过渡密度，以前的测量对此对此不敏感。使用GW170817数据的直接搜索尚未找到该信号，这可能是由于信噪比有限。我们预测，高级Ligo Plus可以观察到这种信号，并且使用第三代重力波检测器（例如爱因斯坦望远镜和宇宙探险家）更有可能。
Thanks to recent measurements of tidal deformability and radius, the nuclear equation of state and structure of neutron stars are now better understood. Here, we show that through resonant tidal excitations in a binary inspiral, the neutron crust generically undergoes elastic-to-plastic transition, which leads to crust heating and eventually meltdown. This process could induce $\sim \mathcal{O}(0.1)$ phase shift in the gravitational waveform. Detecting the timing and induced phase shift of this crust meltdown will shed light on the crust structure, such as the core-crust transition density, which previous measurements are insensitive to. A direct search using GW170817 data has not found this signal, possibly due to limited signal-to-noise ratio. We predict that such signal may be observable with Advanced LIGO Plus and more likely with third-generation gravitational-wave detectors such as the Einstein Telescope and Cosmic Explorer.
