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: 1607291
• 负责人: Steven Liebling
• 金额: $ 18万
• 依托单位: Long Island 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 2020-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1607291&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引力波天文台探测到引力波，一扇通往宇宙的新窗口打开了。其他望远镜观测的是电磁波（包括可见光），而这个新窗口将给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得最多的信息。特别是，我们研究中子星和黑洞的非常剧烈的合并，以确定这些系统的性质是如何在引力波和电磁波中编码的。该奖项支持的目标是研究紧凑物体的动力学及其发出的辐射，以便从aLIGO和类似探测器中获取尽可能多的科学信息。我们将通过计算研究包含磁化物质和电阻效应的二元系统、现实状态方程、电磁和中微子发射以及r过程核合成来实现这一目标。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，重点是中子星状态、质量和半径方程的可观测印记。（ii）我们将研究解析和现象学引力波模板的构建。（iii）我们将研究合并双星的流出，将其作为具有特征电磁和中微子信号的事件的指标。（iv）我们将研究磁场和电磁发射的整体行为，如射流，起源于合并双星的磁层。