Collaborative Research: Compact Binary Mergers in the Advanced LIGO Era

合作研究：先进 LIGO 时代的紧凑型二元合并

• 批准号: 1607390
• 负责人: Matthew Anderson
• 金额: $ 7.43万
• 依托单位: Indiana University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1607390&HistoricalAwards=false
• 关键词: Collaborative; Research; Compact; Binary; Mergers

A new window on the universe opened recently with the detection of gravitational waves by the LIGO gravitational wave observatory. Other telescopes observe electromagnetic waves (that includes visible light), and this new window will give us quite different and complementary information. The work described here seeks to understand better how to get the most information from these gravitational wave observations. In particular, we study the very violent merger of neutron stars and black holes to determine how the properties of these systems are encoded in both gravitational and electromagnetic waves. The goals supported by this award are to study the dynamics of compact objects and the radiation they emit to capture the most science possible from aLIGO and similar detectors. We will do so through computational studies of binary systems incorporating magnetized matter with resistive effects, realistic equations of state, electromagnetic and neutrino emission, and r-process nucleosynthesis. Our efforts will include the following: (i) We will determine gravitational waveforms from these binaries, with a focus on observable imprints from the neutron star equation of state, mass, and radius. (ii) We will investigate the construction of analytic and phenomenological gravitational wave templates. (iii) We will study outflows from merging binaries as an indicator of events with characteristic electromagnetic and neutrino signals. (iv) We will study the global behavior of magnetic fields and the electromagnetic emissions, such as jets, that originate in the magnetosphere of coalescing binaries.

最近，随着LIGO引力波天文台对引力波的探测，打开了了解宇宙的新窗口。其他望远镜观察电磁波（包括可见光），这个新窗口将为我们提供完全不同的补充信息。这里描述的工作旨在更好地理解如何从这些引力波观测中获取最多的信息。特别是，我们研究中子星和黑洞的剧烈合并，以确定这些系统的特性如何编码在引力波和电磁波中。该奖项支持的目标是研究致密天体的动力学及其发出的辐射，以从 aLIGO 和类似探测器中捕获尽可能多的科学信息。我们将通过对二元系统的计算研究来实现这一目标，其中包括具有电阻效应的磁化物质、现实的状态方程、电磁和中微子发射以及r过程核合成。我们的工作将包括以下内容：（i）我们将确定这些双星的引力波形，重点关注中子星状态方程、质量和半径的可观测印记。 （ii）我们将研究解析和唯象引力波模板的构建。 (iii) 我们将研究合并双星的流出量，作为具有特征电磁和中微子信号的事件的指标。 (iv) 我们将研究磁场的整体行为和电磁发射，例如起源于聚结双星磁层的射流。