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arXiv 2009.06109astro-ph.IMastro-ph.CO
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引力波信号的神经网络表征

Characterization of Gravitational Waves Signals Using Neural Networks

A. Caramete, A. I. Constantinescu, L. I. Caramete, T. Popescu, R. A. Balasov, D. Felea, M. V. Rusu, P. Stefanescu, O. M. Tintareanu

摘要:

引力波天文学已经是一个成熟的研究领域多年。此外,在2017年LIGO/Virgo合作探测到一个双中子星系统碰撞期间发出的第一个引力波信号之后,伴随着来自同一事件的其他类型信号的探测,多信使天文学更加坚定地声称自己的权利。在这种情况下,在引力波实验中,有一种快速的机制来警告潜在的引力波事件是非常重要的,其他天文台能够检测到由同一事件产生的其他类型的信号(例如,在其他波长中)。在本文中,我们提出了第一个进展的神经网络算法的训练,以识别和表征引力波模式的信号加噪声数据样本的发展。我们已经实现了两个版本的算法,一个是将引力波信号分为2类,另一个是将它们分为4类,根据发射源的质量比。我们已经取得了可喜的成果,2类网络的训练和测试准确率为100%,4类网络的准确率约为95%。我们的结论是,当前版本的神经网络算法证明了一个良好配置和校准的双向长短期记忆软件的能力,以非常高的精度和在极短的时间内分类引力波信号,即使它们伴随着噪声。此外,该算法获得的性能使其成为一种快速的数据分析方法,并可用作未来LISA任务等引力波观测站的低延迟管道。

英文摘要:

Gravitational wave astronomy has been already a well-established research domain for many years. Moreover, after the detection by LIGO/Virgo collaboration, in 2017, of the first gravitational wave signal emitted during the collision of a binary neutron star system, that was accompanied by the detection of other types of signals coming from the same event, multi-messenger astronomy has claimed its rights more assertively. In this context, it is of great importance in a gravitational wave experiment to have a rapid mechanism of alerting about potential gravitational waves events other observatories capable to detect other types of signals (e.g. in other wavelengths) that are produce by the same event. In this paper, we present the first progress in the development of a neural network algorithm trained to recognize and characterize gravitational wave patterns from signal plus noise data samples. We have implemented two versions of the algorithm, one that classifies the gravitational wave signals into 2 classes, and another one that classifies them into 4 classes, according to the mass ratio of the emitting source. We have obtained promising results, with 100% training and testing accuracy for the 2-class network and approximately 95% for the 4-class network. We conclude that the current version of the neural network algorithm demonstrates the ability of a well-configured and calibrated Bidirectional Long-Short Term Memory software to classify with very high accuracy and in an extremely short time gravitational wave signals, even when they are accompanied by noise. Moreover, the performance obtained with this algorithm qualifies it as a fast method of data analysis and can be used as a low-latency pipeline for gravitational wave observatories like the future LISA Mission.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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