论文标题
建模$ 2.5 \，m _ {\ odot} $紧凑型星与夸克物质
Modelling a $2.5 \, M_{\odot}$ Compact Star with Quark Matter
论文作者
论文摘要
在引力波事件中，检测出意外的$ \ sim 2.5 m _ {\ odot} $组件GW190814使高能天体物理学家的社区感到困惑，因为在没有进一步的信息的情况下，不清楚这是最重的“ NeTron Star”是否有没有发现的“ NeTron Star”或“ neTron Star”是否有没有发现的地方，或者是当地的众所周知的众所周知的邻居。我们在这项工作中显示了前者模型的一些可能性，在三种不同的夸克物质模型的框架中，内部压力中有和没有各向异性。作为“异国”解决方案类别的代表，我们表明，即使恒星序列可能达到这个球场，也很难同时实现radius的限制，这是由NOTER团队衡量的PULSAR PSR PSR J0030+0451。因此，假设这两个测量值均存在，即使在各向异性解决方案中，紧凑的中子星也不能全部由自束的夸克物质制成，这些解决方案在$ \ sim 2.5 m _ {\ odot} $图中提高了最大质量。我们还指出，一个非常庞大的紧凑型恒星将限制当前宇宙中的绝对最大物质密度小于核饱和值的6倍。
The detection of an unexpected $\sim 2.5 M_{\odot}$ component in the gravitational wave event GW190814 has puzzled the community of High-Energy astrophysicists, since in the absence of further information it is not clear whether this is the heaviest "neutron star" ever detected or either the lightest black hole known, of a kind absent in the local neighbourhood. We show in this work a few possibilities for a model of the former, in the framework of three different quark matter models with and without anisotropy in the interior pressure. As representatives of classes of "exotic" solutions, we show that even though the stellar sequences may reach this ballpark, it is difficult to fulfill simultaneously the constraint of the radius as measured by the NICER team for the pulsar PSR J0030+0451. Thus, and assuming both measurements stand, compact neutron stars can not be all made of self-bound quark matter, even within anisotropic solutions which boost the maximum mass well above the $\sim 2.5 M_{\odot}$ figure. We also point out that a very massive compact star will limit the absolute maximum matter density in the present Universe to be less than 6 times the nuclear saturation value.
