论文标题
用更好和LIGO/处女座测量核物质参数
Measuring Nuclear Matter Parameters with NICER and LIGO/Virgo
论文作者
论文摘要
良好的合作最近报道了PULSAR PSR J0030+0451的质量和半径的测量。在这里，我们使用这种新测量来限制高阶核物质参数之一$ k _ {\ mathrm {sym，0}} $。我们进一步结合了Ligo/Pirgo对二进制中子星合并GW170817的潮汐测量，以推导关节1- $σ$约束作为$ k _ {\ Mathrm {sym，0}}} = -102 = -102^{+71} _ { - 72} _ { - 72} $ mev。我们认为，这是在迄今为止参数的最可靠的束缚，即在饱和密度上没有新的物理学会影响中子星观测到的。
The NICER Collaboration recently reported the measurement of the mass and radius of a pulsar PSR J0030+0451. We here use this new measurement to constrain one of the higher-order nuclear matter parameters $K_{\mathrm{sym,0}}$. We further combine the tidal measurement of the binary neutron star merger GW170817 by LIGO/Virgo to derive a joint 1-$σ$ constraint as $K_{\mathrm{sym,0}} = -102^{+71}_{-72}$ MeV. We believe this is the most reliable bound on the parameter to date under the assumption that there is no new physics above the saturation density which impacts neutron star observations.
