论文标题
由布朗压力积累过程触发的脉冲星故障的长期统计数据
Long-term statistics of pulsar glitches triggered by a Brownian stress accumulation process
论文作者
论文摘要
开发了旋转式脉冲星中旋转故障的微物理 - 不合时宜的元模型，其中，随着小故障之间的布朗过程，全球平均内部应力会积聚，一旦覆盖了关键的阈值，就会触发小故障。关于单个脉冲星的长期发生统计的精确，可伪造的预测。例如，在所有脉冲星中，小故障的大小和等待时间之间的长矛人互相关系数应超过0.25。在记录最多的故障的六个脉冲星中，PSR J0537 $ - $ 6910和PSR J0835 $ - $ 4510与元模型的预测一致，而PSR J1740 $ - $ 3015和PSR J0631 $+$ 1036不是。 PSR J0534 $+$ 2200和PSR J1341 $ - 6220 $ 6220仅与元模型一致，如果存在未发现的小毛刺人群，等待时间很小，我们无法解决。将结果与国家依赖性泊松过程（文献中的另一种微物理 - 敏捷的元模型）进行了比较。该结果还简要应用于PSRJ0835 $ - $ 4510的最近的脉冲到脉冲观测，这似乎揭示了在2016年故障之前旋转频率负面波动的证据。
A microphysics-agnostic meta-model of rotational glitches in rotation-powered pulsars is developed, wherein the globally averaged internal stress accumulates as a Brownian process between glitches, and a glitch is triggered once a critical threshold is surmounted. Precise, falsifiable predictions are made regarding long-term event statistics in individual pulsars. For example, the Spearman cross-correlation coefficient between the size of a glitch and the waiting time until the next glitch should exceed 0.25 in all pulsars. Among the six pulsars with the most recorded glitches, PSR J0537$-$6910 and PSR J0835$-$4510 are consistent with the predictions of the meta-model, while PSR J1740$-$3015 and PSR J0631$+$1036 are not. PSR J0534$+$2200 and PSR J1341$-$6220 are only consistent with the meta-model, if there exists an undetected population of small glitches with small waiting times, which we do not resolve. The results are compared with a state-dependent Poisson process, another microphysics-agnostic meta-model in the literature. The results are also applied briefly to recent pulse-to-pulse observations of PSRJ0835$-$4510, which appear to reveal evidence for a negative fluctuation in rotation frequency just prior to the 2016 glitch.
