Detecting the Hadron-Quark Phase Transition with Gravitational Waves
Detecting the Hadron-Quark Phase Transition with Gravitational Waves
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DOI：
10.3390/universe5060156
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发表时间：
2019-06
期刊：
影响因子：
2.9
通讯作者：
M. Hanauske;L. Bovard;E. Most;Jens Papenfort;J. Steinheimer;A. Motornenko;V. Vovchenko;V. Dexheimer;S. Schramm;H. Stöcker
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文献类型：
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作者：
M. Hanauske;L. Bovard;E. Most;Jens Papenfort;J. Steinheimer;A. Motornenko;V. Vovchenko;V. Dexheimer;S. Schramm;H. Stöcker
2017年8月，人们期待已久的双中子星合并产生的引力波（GW170817）的探测标志着多信使引力波天文学新领域的开始。通过利用从 GW170817 晚期吸气阶段提取的两颗中子星的潮汐变形，现在可以约束中子星物质状态方程的几个全局属性。然而，状态方程的高密度和温度状态中最有趣的部分仅印在残余超质量/超质量中子星合并后的引力波发射中。在 GW170817 中没有观察到这种情况，但可能会在 LIGO/VIRGO 合作当前观测运行中即将发生的事件中检测到。在过去的几十年里，人们对合并中子星双星进行了大量的数值相对论模拟，并对发射的引力波剖面和所产生的残余物的内部结构进行了详细分析。在所产生的超大质量中子星的内部区域中可能出现强子-夸克相变的后果以及量子色动力学相图中其底层物质的演化将是本文的重点。将表明，状态方程的不同密度/温度区域可以通过对未来双致密星合并事件发射的合并后引力波信号的光谱特性的测量来严格限制。
The long-awaited detection of a gravitational wave from the merger of a binary neutron star in August 2017 (GW170817) marks the beginning of the new field of multi-messenger gravitational wave astronomy. By exploiting the extracted tidal deformations of the two neutron stars from the late inspiral phase of GW170817, it is now possible to constrain several global properties of the equation of state of neutron star matter. However, the most interesting part of the high density and temperature regime of the equation of state is solely imprinted in the post-merger gravitational wave emission from the remnant hypermassive/supramassive neutron star. This regime was not observed in GW170817, but will possibly be detected in forthcoming events within the current observing run of the LIGO/VIRGO collaboration. Numerous numerical-relativity simulations of merging neutron star binaries have been performed during the last decades, and the emitted gravitational wave profiles and the interior structure of the generated remnants have been analysed in detail. The consequences of a potential appearance of a hadron-quark phase transition in the interior region of the produced hypermassive neutron star and the evolution of its underlying matter in the phase diagram of quantum cromo dynamics will be in the focus of this article. It will be shown that the different density/temperature regions of the equation of state can be severely constrained by a measurement of the spectral properties of the emitted post-merger gravitational wave signal from a future binary compact star merger event.