论文标题
部分可观测时空混沌系统的无模型预测
Realistic Detection and Early Warning of Binary Neutron Stars with Decihertz Gravitational-wave Observatories
论文作者
论文摘要
我们在现实的检测策略中调查了二进制中子星（BNS）种群的二元中子星（BNS）种群的检测率和预警参数。假设B-Decigo进行了4年的操作，我们基于参数精度将可检测到的BNSS分类为三类：（a）在1年内合并的来源，可以将其定位为$ΔΩ\ sim 10^{0} $ deg $ deg $ deg 2 $; （b）在1 - 4年内合并的资源，占总事件的四分之三，并以$ΔΩ\ sim 10^{ - 2} $ nim-d $^$^2 $以及合并的准确性以及$ΔT_CC\ sim 10^{ - 1} $ s; （c）在4年任务窗口中不合并的来源，该窗口可以使用$ΔΩ\ sim 10^{ - 1} $ deg $^2 $和$ΔT_C\ sim 10^{0} $ s。此外，我们比较了B-Decigo的利弊与第三代地面检测器，并使用其他3种decihertz观测值和4个BNS人群模型探索了检测的前景。在现实的观察情况下，我们发现Decihertz探测器甚至可以在合并之前的数十年来提供早期训练的警报，而其本地化仍然与地面设施一样准确。最后，我们发现在考虑混乱噪声时发现事件的减少，但这可以通过适当的噪声减法来部分解决。
We investigated the detection rates and early warning parameters of binary neutron star (BNS) populations with decihertz gravitational-wave observatories in a realistic detecting strategy. Assuming 4 years' operation of B-DECIGO, we based on parameter precision to classify the detectable BNSs into three categories: (a) sources that merge within 1 year, which could be localized with an uncertainty of $ΔΩ\sim 10^{0}$ deg$^2$; (b) sources that merge in 1-4 years, which take up three quarters of the total events and yield the most precise angular resolution with $ΔΩ\sim 10^{-2}$ deg$^2$ and time-of-merger accuracy with $Δt_c\sim 10^{-1}$ s; and (c) sources that do not merge during the 4-yr mission window, which enable possible early warnings, with $ΔΩ\sim 10^{-1}$ deg$^2$ and $Δt_c\sim 10^{0}$ s. Furthermore, we compared the pros and cons of B-DECIGO with the third-generation ground-based detectors, and explored the prospects of detections using 3 other decihertz observatories and 4 BNS population models. In realistic observing scenarios, we found that decihertz detectors could even provide early-warning alerts to a source decades before its merger while their localizations are still as accurate as ground-based facilities. Finally we found a decrease of events when considering the confusion noise, but this could be partially solved by a proper noise subtraction.
