论文标题
在灵感二进制中子星系的最后轨道上对潮汐变形性的热影响
Thermal effects on tidal deformability in the last orbits of an inspiraling binary neutron star system
论文作者
论文摘要
通过检测发射的引力波对二进制中子星对合并的研究是研究高密度下密集核物质特性的最有承诺的工具之一。值得声称，目前，有力的证据表明，在合并之前的最后轨道中，恒星的温度为零。然而，理论研究表明，有关灵感阶段的温度甚至可以达到几种MEV。根据主要理论，潮汐将机械能和角动量传递到恒星，以轨道为代价，在轨道上，恒星内的摩擦将机械能转化为热量。在灵感期间，这些效果可能可检测到。已经使用不同的处理方法来估计机械能的转移和潮汐摩擦的大小，从而得出了关于合并前潮汐效应的重要性的不同结论。目前的工作专门研究温度对合并前中子恒星系统的灵感中中子星的潮汐变形性的影响。我们应用了一类热的状态和绝热状态，源自各种核模型。我们发现，即使对于低温值（$ t <1 $ MEV），对潮汐变形性基本成分的影响也不可以忽略不计。另一方面，在绝热之星的情况下，对潮汐变形性的热效应仍然无法察觉，直至$ s = 0.2 \ {\ rm k} _ {b} $。根据主要发现，温度对潮汐变形性的影响是无法区分的。讨论和分析上述结果的后果。
The study of binary neutron stars mergers by the detection of the emitted gravitational waves is one of the most promised tools to study the properties of dense nuclear matter at high densities. It is worth claiming that, at the moment, strong evidence that the temperature of the stars is zero during the last orbits before coalescing, does not exist. Nevertheless, theoretical studies suggest that the temperature concerning the inspiral phase, could reach even a few MeV. According to the main theory, tides transfer mechanical energy and angular momentum to the star at the expense of the orbit, where friction within the star converts the mechanical energy into heat. During the inspiral, these effects are potentially detectable. Different treatments have been used to estimate the transfer of the mechanical energy and the size of the tidal friction, leading to different conclusions about the importance of pre-merger tidal effects. The present work is dedicated to the study of the effect of temperature on the tidal deformability of neutron stars during the inspiral of a neutron star system just before the merger. We applied a class of hot equations of state, both isothermal and adiabatic, originated from various nuclear models. We found that even for low values of temperature ($T<1$ MeV), the effects on the basic ingredients of tidal deformability are not negligible. On the other hand, in the case of the adiabatic star, the thermal effects on tidal deformability remain imperceptible, up to the value $S=0.2 \ {\rm k}_{B}$. According to the main finding, the effect of the temperature on the tidal deformability is indistinguishable. The consequences of the above result are discussed and analyzed.
