论文标题
PULSAR J0740+6620的人群信息质量估计
A Population-Informed Mass Estimate for Pulsar J0740+6620
论文作者
论文摘要
银河系双中子星系的质量分布紧密，左右为$ \ sim 1.35 m _ {\ odot} $，但是所有已知脉冲星的质量分布更广泛。在这里，我们重建Alsing等。 （2018）在二元系统中观察到的脉冲星的双峰质量分布，并结合了从J0740+6620的观测值中的数据，这些数据在该工作时不可用。因为J0740+6620在质量分布方面是一个异常值，其质量测量值不可忽略不确定，因此其质量从人群中获得了较大的校正，成为$ M_ {J0740+6620} = 2.03^^{+0.10} _ {+0.10} _ { - 0.08} _ { - 0.08} \，m_ $ $ $ $（MEDIAN和6888888888888岁。来自我们人口模型的随机样本，包括人口信息的脉冲星质量估计值，请访问https://github.com/farr/alsingnsmassreplication。
Galactic double neutron star systems have a tight mass distribution around $\sim 1.35 M_{\odot}$, but the mass distribution of all known pulsars is broader. Here we reconstruct the Alsing, et al. (2018) bimodal mass distribution of pulsars observed in binary systems, incorporating data from observations of J0740+6620 which were not available at the time of that work. Because J0740+6620 is an outlier in the mass distribution with non-negligible uncertainty in its mass measurement, its mass receives a large correction from the population, becoming $m_{J0740+6620} = 2.03^{+0.10}_{-0.08} \, M_\odot$ (median and 68\% CI). Stochastic samples from our population model, including population-informed pulsar mass estimates, are available at https://github.com/farr/AlsingNSMassReplication .
