利用引力辐射观测信号研究中子星及致密物质性质

随着已有引力波探测装置测量精度的提升以及新引力波探测装置的建设并陆续投入使用，更多的中子星相关的引力波将被探测到。如何从探索到的引力波信号中提取出中子星结构以及物态方程等的信息将是引力波信号解读的一个关键科学问题。中子星引力辐射可探测量同中子星其他性质参量之间的普适性关系（即不依赖于物态方程的关系）是解决该问题的重要途径。本项目的主要研究内容之一就是综合寻找可高精度探测的引力辐射参量同中子星各个性质参量之间的普适性关系。中子星振动模式是可能被探测到的、重要的频发引力辐射源，可用于约束中子星整体性质、探知中子星内部结构、约束高密度核物质物态方程以及验证引力理论等。本项目还将探索如何通过未来探测到的中子星振动模式引力辐射参数反向约束中子星的整体性质（例如中子星的半径，孤立中子星的质量等）、内部结构以及高密度核物质物态等。

With the improvement of measurement accuracy of existing gravitational radiation detectors and the construction of new gravitational radiation detection devices, more gravitational radiations related to neutron stars are expected to be detected. How to extract the information of the neutron star structure and the equation of state of dense matter from the gravitational wave signals will be a key scientific problem. To find the universal relations between the gravitational wave characteristic parameters and other property parameters of neutron stars is an important way to solve above problem, which will be one of the important research contents of this project. Oscillation mode in neutron star is an important source of frequent and detectable gravitational radiation, which can be used to constrain the global property of neutron star, to explore the internal structure of neutron star, to constrain the equation of state of high-density nuclear matter and to verify the theory of gravity. This project will also explore how to reversely constrain the global properties of neutron stars (such as the radius of neutron stars, the mass of isolated neutron stars, etc.), the internal structure and the equation of state of dense nuclear matter through the detectable gravitational radiation parameters of neutron star oscillation modes.