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arXiv 1111.0005astro-ph.HEastro-ph.COgr-qc
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改进协调的引力波和电磁观测的前景

Towards improving the prospects for coordinated gravitational-wave and electromagnetic observations

Ilya Mandel, Luke Z. Kelley, Enrico Ramirez-Ruiz

摘要:

我们讨论了两种方法来寻找引力波(GW)和电磁(EM)的双中子星合并对应。第一种方法依赖于基于EM瞬变的检测来触发GW检测器数据的存档搜索。我们引入了一种定量的方法来评估GW检测器的改进,由于从EM瞬态获得的额外信息和从二进制合并的信号的存在下增加的信心。我们也提倡利用除短伽马射线暴以外的其他瞬变。第二种方法涉及通过有针对性的EM观察来跟踪GW候选者。我们认为,使用较慢,但最佳的参数估计技术,以本地化的源在天空中,和一个更复杂的使用天体物理学的先验信息,包括星系目录,找到首选的后续位置。

英文摘要:

We discuss two approaches to searches for gravitational-wave (GW) and electromagnetic (EM) counterparts of binary neutron star mergers. The first approach relies on triggering archival searches of GW detector data based on detections of EM transients. We introduce a quantitative approach to evaluate the improvement to GW detector reach due to the extra information gained from the EM transient and the increased confidence in the presence of a signal from a binary merger. We also advocate utilizing other transients in addition to short gamma ray bursts. The second approach involves following up GW candidates with targeted EM observations. We argue for the use of slower but optimal parameter-estimation techniques to localize the source on the sky, and for a more sophisticated use of astrophysical prior information, including galaxy catalogs, to find preferred followup locations.

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