论文标题
部分可观测时空混沌系统的无模型预测
Search for continuous gravitational waves from HESS~J1427-608 with a hidden Markov model
论文作者
论文摘要
我们提出了从未识别的脉冲星潜在为HESS 〜J1427-608供电的连续重力波信号的搜索，这是一种空间未解决的TEV点源，该点由高能立体镜面系统（HESS）检测到。该搜索使用半连锁算法，该算法结合了最大似然$ \ Mathcal {f} $〜统计量与隐藏的Markov模型，以有效地检测和跟踪准单音色信号，这些信号在频率上随机徘徊。它使用了高级激光干涉仪重力波观测站的第二次观测运行中的数据。 HESS源的多波长观察结果与Tev-Bright Pulsar风星云群体的专有人物结合在一起，以限制搜索参数。我们没有发现该目标引力波发射的证据。我们将特征性波应变$ H_0^{95 \％} $（对于循环极化信号）设置为$ 95 \％$置信度的样品子带的信心水平，并插入其插值以估算完整频段的灵敏度。我们发现$ H_0^{95 \％} = 1.3 \ times 10^{ - 25} $接近185〜Hz。对椭圆度的隐含约束和\ textit {r} -mode振幅达到$ε\ leq 10^{ - 5} $和$α\ leq 10^{ - 3} $ at 200〜Hz。
We present a search for continuous gravitational wave signals from an unidentified pulsar potentially powering HESS~J1427-608, a spatially unresolved TeV point source detected by the High Energy Stereoscopic System (HESS). The search uses a semi-coherent algorithm, which combines the maximum likelihood $\mathcal{F}$~statistic with a hidden Markov model to efficiently detect and track quasi-monochromatic signals that wander randomly in frequency. It uses data from the second observing run of the Advanced Laser Interferometer Gravitational-Wave Observatory. Multi-wavelength observations of the HESS source are combined with the proprieties of the population of TeV-bright pulsar wind nebulae to constrain the search parameters. We find no evidence of gravitational wave emission from this target. We set upper limits on the characteristic wave strain $h_0^{95\%}$ (for circularly polarized signals) at $95\%$ confidence level in sample sub-bands and interpolate it to estimate the sensitivity in the full band. We find $h_0^{95\%} = 1.3\times 10^{-25}$ near 185~Hz. The implied constraints on the ellipticity and \textit{r}-mode amplitude reach $ε\leq 10^{-5}$ and $α\leq 10^{-3}$ at 200~Hz, respectively.
