论文标题
年轻无线电脉冲星的时机II。制动指数及其解释
Timing of young radio pulsars II. Braking indices and their interpretation
论文作者
论文摘要
在本系列的论文I中，我们使用$ \ sim $ \ sim $ \ sim $ \ sim $ \ sim $ \ sim $ \ sim $ \ sim $ \ sim $ \ sim $ 10年的定时观察，从而检测到了19岁，高 - $ \ dot {e} $的制动指数（$ n $）的显着价值。在这里，我们使用贝叶斯脉冲星时框架进行了更详细的详细研究，以模拟定时噪声并进行选择，以区分包含指数毛刺恢复和制动指数特征的模型。我们表明，即使在存在故障的情况下，也可以通过添加大量的档案数据来维持$ n $的一致值。我们提供了强有力的论点，即即使小故障在脉冲星的旋转频率的演变中起关键作用，我们的测量值不太可能是由于未见小故障的指数恢复信号。我们得出的结论是，至少在十年时间尺度上，$ n $的价值可能明显大于规范3，并讨论对脉冲星演变的影响。
In Paper I of this series, we detected a significant value of the braking index ($n$) for 19 young, high-$\dot{E}$ radio pulsars using $\sim$ 10 years of timing observations from the 64-m Parkes radio telescope. Here we investigate this result in more detail using a Bayesian pulsar timing framework to model timing noise and to perform selection to distinguish between models containing exponential glitch recovery and braking index signatures. We show that consistent values of $n$ are maintained with the addition of substantial archival data, even in the presence of glitches. We provide strong arguments that our measurements are unlikely due to exponential recovery signals from unseen glitches even though glitches play a key role in the evolution of a pulsar's spin frequency. We conclude that, at least over decadal time scales, the value of $n$ can be significantly larger than the canonical 3 and discuss the implications for the evolution of pulsars.
