论文标题
来自中子星星合并的大型赫尔兹引力波
Mega-Hertz Gravitational Waves from Neutron Star Mergers
论文作者
论文摘要
中子星星合并为在极端条件下与量子染色体动力学结合的强场重力提供了独特的实验室。所得重力波的频率和振幅编码有关合并的宝贵信息。迄今为止，模拟表明这些频率位于基洛赫兹范围。他们还表明，如果量子染色体动力学在高巴里昂密度下具有一阶相变，那么在合并动力学期间可能会访问这一点。在这里，我们表明，这将导致过热和/或超压力气泡的成核，随后的动力学将在Mega-Hertz范围内产生重力波。我们估算了该信号的幅度，并表明它可能属于未来超导射频腔探测器对合并的预期灵敏度，该探测器在距离内的距离超过数十个Mega-Parsecs。
Neutron star mergers provide a unique laboratory for the study of strong-field gravity coupled to Quantum Chromodynamics in extreme conditions. The frequencies and amplitudes of the resulting gravitational waves encode invaluable information about the merger. Simulations to date have shown that these frequencies lie in the kilo-Hertz range. They have also shown that, if Quantum Chromodynamics possesses a first-order phase transition at high baryon density, then this is likely to be accessed during the merger dynamics. Here we show that this would result in the nucleation of superheated and/or supercompressed bubbles whose subsequent dynamics would produce gravitational waves in the Mega-Hertz range. We estimate the amplitude of this signal and show that it may fall within the expected sensitivity of future superconducting radio-frequency cavity detectors for mergers at distances up to tens of Mega-parsecs.
