论文标题
在中子星和半径上结合电磁和重力波的约束
Combining Electromagnetic and Gravitational-Wave Constraints on Neutron-Star Masses and Radii
论文作者
论文摘要
我们基于GW170817，对中子星质量和半径约束进行联合贝叶斯推断，对静止的低质量X射线二进制（QLMXB）的观测值，光度半径膨胀X射线爆发（PRES）和X射线的定时观察J0030+0451。使用此数据集，先前分布的形式仍然对后质量 - 拉迪乌斯（MR）曲线和状态方程（EOS）产生影响，但是这种影响比仅考虑QLMXBS时所获得的影响要小。我们通过对不确定性的“固有散射”贡献，仅发现后期较大的宽广的贡献来分析电磁数据的一致性。这表明中子星体结构的重力波和电磁观察提供了中子星质量 - 拉迪乌斯曲线和EOS的一致图片。
We perform a joint Bayesian inference of neutron-star mass and radius constraints based on GW170817, observations of quiescent low-mass X-ray binaries (QLMXBs), photospheric radius expansion X-ray bursts (PREs), and X-ray timing observations of J0030+0451. With this data set, the form of the prior distribution still has an impact on the posterior mass-radius (MR) curves and equation of state (EOS), but this impact is smaller than recently obtained when considering QLMXBs alone. We analyze the consistency of the electromagnetic data by including an "intrinsic scattering" contribution to the uncertainties, and find only a slight broadening of the posteriors. This suggests that the gravitational-wave and electromagnetic observations of neutron-star structure are providing a consistent picture of the neutron-star mass-radius curve and the EOS.
