Collaborative Research: WoU-MMA: Toward Binary Neutron Star Mergers on a Moving-mesh

该项目将开发一个计算代码来模拟中子星双星的合并。新的代码将结合流体动力学代码和数值相对论代码的效率，产生一种代码，可以更快、更准确地预测中子星双星合并的预期光学余辉。这将有助于我们更多地了解宇宙中重元素的起源。该项目还将支助编制研究生和本科生的数值相对论训练材料。这项工作也将被纳入以引力波天文学为重点的公民科学项目“BlackHoles@Home”。公共宣传工作也将在威斯康星大学密尔沃基分校天文馆展出。这个奖项推进了“宇宙大创意之窗”的目标。该项目将结合移动网格流体力学代码MANGA和有效的数值相对论代码SENR/NRPy+。每个代码都依赖于使用适当的网格来模拟物理。该项目将整合这两种代码，以允许移动网格广义相对论流体动力学代码，这将是研究紧凑物体合并的理想选择。在开发新代码后，该项目将把它应用于具有多向性和现实状态方程的双中子星合并模型。威斯康星大学密尔沃基分校的PI将在天文馆对中子星和黑洞进行一般性的介绍，并培训少数本科生组织和管理天文馆的表演和特别活动。西弗吉尼亚大学的PI将继续支持SENR/NRPy+的Jupyter笔记本，作为广义相对论流体动力学领域学生的教学培训工具。本项目对SENR/NRPy+的任何改进都将纳入计划中的“BlackHoles@home”公民科学项目。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

The project will develop a computational code for modeling the mergers of neutron star binaries. The new code will combine the efficiencies of a fluid dynamics code and a numerical relativity code to produce a code that can more quickly and accurately predict the expected optical afterglows from neutron star binary mergers. This will help us to learn more about the origin of heavy elements in the universe. The project will also support the development of training materials for numerical relativity at the graduate and undergraduate levels. The work will also be incorporated into the citizen-science project "BlackHoles@Home" that is focused on gravitational wave astronomy. Public outreach efforts will also be presented at the UW-Milwaukee planetarium. This award advances the goals of the Windows on the Universe Big Idea.The project will combine the moving-mesh hydrodynamics code MANGA with an efficient numerical relativity code SENR/NRPy+. Each code relies on using an appropriate grid to model the physics. This project will integrate the two codes to allow for a moving-mesh general relativistic hydrodynamics code that will be ideal for studying compact object mergers. Upon development of the new code, the project will apply it to models of binary neutron star mergers with both polytropic and realistic equations of state. The PI at UW-Milwaukee will give general presentations on neutron stars and black holes at the planetarium and train a small number of undergraduates to organize and run planetarium shows and special events. The PI at West Virginia University will continue to support the Jupyter notebooks for SENR/NRPy+ as pedagogical training tools for students in the field of general relativistic hydrodynamics. Any improvements in SENR/NRPy+ produced in this project will be incorporated in the planned "BlackHoles@home" citizen-science project.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.