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arXiv 1901.05486astro-ph.HE
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引力波和高能中微子候选的低延迟多信使天体物理算法(LLAMA)

Low-Latency Algorithm for Multi-messenger Astrophysics (LLAMA) with Gravitational-Wave and High-Energy Neutrino Candidates

Stefan Countryman, Azadeh Keivani, Imre Bartos, Zsuzsa Marka, Thomas Kintscher, Rainer Corley, Erik Blaufuss, Chad Finley, Szabolcs Marka

摘要:

我们详细描述了在线数据分析管道,用于在高级LIGO和高级处女座的第二个观测周期(O2)的引力波(GW)和高能中微子(HENs)的共同来源的多信使搜索。除了提供对源事件的额外科学见解之外,低延迟重合HEN可以提供比单独GW更好的定位,从而允许更快的电磁跟踪。因此,将GW+HEN分析转换为低延迟的自动化管道对于未来的多信使工作至关重要。多信使天体物理学的O2低延迟算法(\pipeline)也作为未来在线GW+HEN搜索的概念验证,并导致代码库也可以处理其他信使。在O2期间,流水线用于将LIGO/Virgo GW候选作为触发器,并实时搜索由IceCube协作提供的落在重建的GW天空图的\ninetyCR内的时间上一致的HEN候选。该算法使用NASA的伽马射线坐标网络向LIGO/Virgo的电磁后续合作伙伴报告同步警报。

英文摘要:

We describe in detail the online data analysis pipeline that was used in the multi-messenger search for common sources of gravitational waves (GWs) and high-energy neutrinos (HENs) during the second observing period (O2) of Advanced LIGO and Advanced Virgo. Beyond providing added scientific insight into source events, low-latency coincident HENs can offer better localization than GWs alone, allowing for faster electromagnetic follow-up. Transitioning GW+HEN analyses to low-latency, automated pipelines is therefore mission-critical for future multi-messenger efforts. The O2 Low-Latency Algorithm for Multi-messenger Astrophysics (\pipeline) also served as a proof-of-concept for future online GW+HEN searches and led to a codebase that can handle other messengers as well. During O2, the pipeline was used to take LIGO/Virgo GW candidates as triggers and search in realtime for temporally coincident HEN candidates provided by the IceCube Collaboration that fell within the \ninetyCR of the reconstructed GW skymaps. The algorithm used NASA's Gamma-ray Coordinates Network to report coincident alerts to LIGO/Virgo's electromagnetic follow-up partners.

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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