Computational Relativity and Gravitation at Petascale: Simulating and Visualizing Astrophysically Realistic Compact Binaries

Petascale 的计算相对论和引力：模拟和可视化天体物理上真实的致密双星

• 批准号: 0832606
• 负责人: Manuela Campanelli
• 金额: $ 3.81万
• 依托单位: Rochester Institute of Tech
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-15 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0832606&HistoricalAwards=false
• 关键词: Computational; Relativity; Gravitation; Petascale; Simulating

ABSTRACT/0832606This award provides travel funds to support technical coordination between the Blue Waters project team and a team of astrophysical researchers to explore the readiness of an astrophysics code for use on the Blue Waters system. If successful, it is anticipated that the code will be used for investigations of a series of problems associated with the merger of pairs of very dense astrophysical objects. These include: the merger of asymmetric black hole binaries, of neutron star binaries, and the merger of a black hole and a neutron star. Through accurate simulations, the researchers hope to characterize the gravity wave signatures of these events with a view to contributing information that will be useful in the diagnosis of gravity wave signals when these are received in terrestrial detectors. In the case of the slower process of neutron star merger, the oscillation modes of the neutron stars prior to merger are believed to be dependent on their internal structure so that comparison of numerical simulations and detected gravity wave signals should provide indirect information about the internal structure of neutron stars. A further topic of investigation is the dynamical behavior of relativistic accretion disks around black hole ? neutron star and neutron star ? neutron star mergers. One aim of these latter investigations is to characterize the highly energetic electromagnetic radiation generated through the interaction of the disrupted neutron star and the accretion disk.The research to be done with Blue Waters will involve a number of graduate students and undergraduates. Results of the work will be included in undergraduate and graduate courses. Results will be disseminated through a visitor program in addition to scientific publications. The project team includes researchers from under-represented groups and young investigators. The project team plans to engage local high-school classes through presentations and high-school students through participation in a two-week academic program for high-school students.

摘要/0832606该奖项提供旅费，以支持蓝色沃茨项目组和天体物理研究人员团队之间的技术协调，以探索蓝色沃茨系统上使用的天体物理代码的准备情况。 如果成功的话，预计该代码将用于研究与非常密集的天体对合并有关的一系列问题。 这包括：不对称黑洞双星的合并，中子星星双星的合并，以及黑洞和中子星星的合并。 通过精确的模拟，研究人员希望描述这些事件的重力波特征，以便在陆地探测器接收到重力波信号时提供有用的信息。 在慢中子星星合并过程的情况下，合并前的中子星的振荡模式被认为是依赖于它们的内部结构，因此，数值模拟和检测到的重力波信号的比较应该提供有关中子星的内部结构的间接信息。 进一步的研究课题是黑洞周围相对论性吸积盘的动力学行为。中子星星和中子星星？中子星星合并。 这些后面的调查的一个目的是表征高能电磁辐射所产生的相互作用的破坏中子星星和吸积盘。与蓝色沃茨进行的研究将涉及一些研究生和本科生。这项工作的结果将纳入本科和研究生课程。 除了科学出版物外，还将通过访问者计划传播结果。 该项目小组包括来自代表性不足群体的研究人员和年轻的调查人员。 项目小组计划通过演讲吸引当地高中班级，并通过参加为期两周的高中生学术课程吸引高中生。