论文标题
在第一个最大开放数据发布中缺少脉冲星故障大小的系统上限
Systematic upper limits on the size of missing pulsar glitches in the first UTMOST open data release
论文作者
论文摘要
提出了对脉冲星故障的系统，半自动化的搜索。搜索是使用隐藏的马尔可夫模型进行的，该模型将小故障和时序噪声融合到脉冲星的假定相位演变的模型中。通过贝叶斯模型的选择在具有最小的人类干预的模型和无故障的模型之间检测到故障。在七个物体中检测到了9个故障，所有这些物体先前已报道。未检测到新的故障。注射研究用于将90 \％频繁的上限放在搜索的282个物体中的每个物体中未检测到的小故障的大小上。获得的平均上限为$Δf^{90 \％}/f = 1.9 \ times 10^{ - 8} $，范围为$ 4.1 \ times 10^{ - 11} \leqΔf^{90 \％}/f \ leq 2.7 \ leq 2.7 \ \ leq 2.7 \ \ leq times 10^{ - 7} $ note post-fast-fast fast-fest-fast-fest concucties。已经证明，包括毛刺恢复具有温和的效果，在大多数情况下，上限增加了$ \ lyssim 5 $ $ 5 $，假设在$ 100 \，\ mathrm {d} $的时间表上完全恢复。
A systematic, semi-automated search for pulsar glitches in the first UTMOST public data release is presented. The search is carried out using a hidden Markov model which incorporates both glitches and timing noise into the model of the assumed phase evolution of the pulsar. Glitches are detected through Bayesian model selection between models with and without glitches present with minimal human intervention. Nine glitches are detected among seven objects, all of which have been previously reported. No new glitches were detected. Injection studies are used to place 90\% frequentist upper limits on the size of undetected glitches in each of the 282 objects searched. The mean upper limit obtained is $Δf^{90\%}/f = 1.9 \times 10^{-8}$, with a range of $4.1 \times 10^{-11} \leq Δf^{90\%}/f \leq 2.7 \times 10^{-7}$, assuming step events with no post-glitch recoveries. It is demonstrated that including glitch recovery has a mild effect, in most cases increasing the upper limit by a factor of $\lesssim 5$ conservatively assuming complete recovery on a timescale of $100\,\mathrm{d}$.
