论文标题
对孤立的脉冲星观测的中子恒星出纳踢速度的校准
Calibration of neutron star natal kick velocities to isolated pulsar observations
论文作者
论文摘要
快速二进制群体合成模拟中超新星纳塔尔踢的当前处方基于单个脉冲星速度数据的简单函数的拟合。我们探讨了中子星在由Mandel＆Müller开发的孤立和二进制系统中收到的纳塔尔踢的新参数化，该系统基于1D和3D超新星模拟，并解释了祖发特性，残留质量和踢速度之间的物理相关性。我们使用非常长的基线干涉仪速度测量银河系单脉冲星来限制此模型中的两个自由参数。我们发现，在单个和二进制进化方案之间，纳塔尔踢参数的推断值没有显着差异。这些参数的最佳拟合值是$ v _ {\ rm ns} = 520 $ km s $ s $^{ - 1} $用于中子星星踢的缩放前因子，而$σ_ {\ rm ns} = 0.3 $用于踢脚踢的分数随机散布。
Current prescriptions for supernova natal kicks in rapid binary population synthesis simulations are based on fits of simple functions to single pulsar velocity data. We explore a new parameterization of natal kicks received by neutron stars in isolated and binary systems developed by Mandel & Müller, which is based on 1D and 3D supernova simulations and accounts for the physical correlations between progenitor properties, remnant mass, and the kick velocity. We constrain two free parameters in this model using very long baseline interferometry velocity measurements of Galactic single pulsars. We find that the inferred values of natal kick parameters do not differ significantly between single and binary evolution scenarios. The best-fit values of these parameters are $v_{\rm ns} = 520$ km s$^{-1}$ for the scaling pre-factor for neutron star kicks, and $σ_{\rm ns}=0.3$ for the fractional stochastic scatter in the kick velocities.
