论文标题
研究中子星天文学的脱糊化发作
Studying the onset of deconfinement with multi-messenger astronomy of neutron stars
论文作者
论文摘要
随着对二进制中子星合并（GW170817）的第一个多通间观察，新的限制因中性恒星的质量和半径提供了新的限制。我们介绍了一类混合EOS，该混合动力EO满足所有这些约束，并预测质量 - 拉迪乌斯图中的一个区域，只能由带有夸克物质核心的混合中性恒星填充。当高质量Pulsar PSR J0740+6620的较好半径测量结果少于11 km时，将提供这种猜想的确认。该半径测量是否会产生超过12 km的结果，这将允许该恒星的纯耐形和杂种性质。在后一种情况下，最大质量可以达到$ 2.6〜m_ \ odot $，因此不对称二进制合并GW190814中的较轻对象可能是混合恒星。我们证明，这种高质量可以与低于$ 1〜m_ \ odot $的星级质量的早期发作和低质量双星星的发生。在这种情况下，GW170817的残留物可能是长期寿命的高质量脉冲星。
With the first multi-messenger observation of a binary neutron star merger (GW170817) new constraints became available for masses and radii of neutron stars. We introduce a class of hybrid EoS that fulfils all these constraints and predicts a region in the mass-radius diagram that could be populated only by hybrid neutron stars with quark matter cores. A confirmation of this conjecture would be provided when the NICER radius measurement for the high-mass pulsar PSR J0740+6620 yields a radius less than 11 km. Would this radius measurement yield a result in excess of 12 km, this would allow for both, a purely hadronic and a hybrid nature of this star. In the latter case the maximum mass could reach $2.6~M_\odot$ so that the lighter object in the asymmetric binary merger GW190814 could have been a hybrid star. We demonstrate that this high mass can be compatible with an early onset of deconfinement at star masses below $1~M_\odot$ and the occurrence of low-mass twin stars. In such a case the remnant of GW170817 could be a long-lived hypermassive pulsar.
