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WoU-MMA: Aspects of Compact Object Mergers

WoU-MMA：紧凑对象合并的各个方面

基本信息

批准号：
2011383
负责人：
Steven Liebling
金额：
$ 20.87万
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：
2020
资助国家：
美国
起止时间：
2020-09-01 至 2024-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2011383&HistoricalAwards=false
关键词：
WoU MMA Aspects Compact Object

项目摘要

This award supports research in relativity and relativistic astrophysics and it addresses the priority areas of NSF's "Windows on the Universe" Big Idea. Much excitement has accompanied the beginning of the gravitational wave era ushered in by LIGO's first detections, and this project seeks to study and model the types of systems observed in these detections. In particular, this work will implement a number of physical processes including magnetic and neutrino cooling and heating effects in a numerical code used to simulate such systems. For a few different reasons, a phase transition at very high densities is expected in neutron star matter, and this project will study what range of effects such a transition could have on both the gravitational wave signature and electromagnetic emissions. This study will contribute to furthering the science obtained with LIGO and electromagnetic telescopes as well as future observatories. The project will train students and other personnel and its research will be broadly disseminated.In an effort to push forward the multi-messenger science achieved in the merger of non-vacuum, compact object mergers, this project seeks the continued development of a distributed and adaptive code infrastructure that models such mergers within relativistic, magnetohydrodynamics. In addition to magnetic effects, realistic equations of state, along with neutrino heating and cooling, will be adopted in simulations of the merger and post-merger of compact object binaries. In addition, adopting a model of a high density phase transition in a piecewise-polytropic equation of state agnostic to the underlying physics, the range of dynamics for such transitions in mergers will be studied.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项支持相对论和相对论天体物理学的研究，并解决了NSF“宇宙之窗”大理念的优先领域。随着LIGO的第一次探测迎来了引力波时代的开始，人们感到非常兴奋，该项目旨在研究和模拟在这些探测中观察到的系统类型。特别是，这项工作将实现一些物理过程，包括磁和中微子冷却和加热的数值代码用于模拟这样的系统的影响。由于几个不同的原因，预计中子星星物质会在非常高的密度下发生相变，该项目将研究这种转变对引力波信号和电磁辐射的影响范围。这项研究将有助于促进LIGO和电磁望远镜以及未来天文台所获得的科学。该项目将培训学生和其他人员，并将广泛传播其研究成果，为了推动在非真空、紧凑物体合并中实现的多信使科学，该项目寻求继续开发一个分布式和自适应代码基础设施，在相对论、磁流体动力学范围内模拟这种合并。除了磁效应外，在模拟致密物体双星的合并和合并后的过程中，还将采用现实的状态方程，沿着中微子的加热和冷却。此外，采用一个模型的高密度相变在一个分段多方方程的状态不可知的基本物理，动态范围内的这种转变，在合并将被研究。这个奖项反映了NSF的法定使命，并已被认为是值得支持，通过评估使用基金会的智力价值和更广泛的影响审查标准。