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arXiv 1612.04412astro-ph.HEastro-ph.GA
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利用星系形成模拟优化LIGO跟踪观测

Using Galaxy Formation Simulations to optimise LIGO Follow-Up Observations

Elisa Antolini, Ilaria Caiazzo, Romeel Davé, Jeremy S. Heyl

摘要:

最近发现的合并黑洞产生的引力辐射对如何组织引力波事件以及观测到的中微子爆发的电磁跟踪提出了挑战。我们提出了一种技术,以选择最有可能举办的事件给定的特定事件是否与最近的恒星形成,低金属丰度恒星或简单地成比例的星系中的总恒星质量的一些假设的星系。我们结合数据从2-MASS测光红移星系目录的结果从星系形成模拟开发观测策略,可能减少搜索的天空面积的一个因素,两个相对于未加权的搜索星系,和一个因素二十搜索整个LIGO本地化区域。

英文摘要:

The recent discovery of gravitational radiation from merging black holes poses a challenge of how to organize the electromagnetic follow-up of gravitational-wave events as well as observed bursts of neutrinos. We propose a technique to select the galaxies that are most likely to host the event given some assumptions of whether the particular event is associated with recent star formation, low metallicity stars or simply proportional to the total stellar mass in the galaxy. We combine data from the 2-MASS Photometric Redshift Galaxy Catalogue with results from galaxy formation simulations to develop observing strategies that potentially reduce the area of sky to search by up to a factor of two relative to an unweighted search of galaxies, and a factor twenty to a search over the entire LIGO localization region.

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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