U.S.-Japan Cooperative Research: Studies in General Relativity and Computational Astrophysics

这一奖项将使康奈尔大学的Stuart L.Shapiro教授和同事能够在两年内与日本京都大学的Humitaka Sato教授和同事合作。他们将研究相对论和相对论天体物理学中的某些前沿问题，包括引力塌缩的性质、黑洞的形成和引力波的产生。这项工作的重点将是超级计算机在这些问题上的应用。这项研究的目的是通过将该领域的两个主要小组聚集在一起，增强我们对相对论和宇宙学的理解。这两个小组都在这些领域进行了开创性的研究，并都对超级计算机在这些问题上的应用感兴趣。由这笔赠款支持的定期访问和合作调查计划将结合各小组的专业知识。京都和康奈尔国家超级计算机设施都有合适的超级计算机设施，并将应用于导致黑洞的质量奇点的性质、非球面引力塌缩的性质以及早期宇宙的宇宙学等问题。每个小组都开发了自己的算法来对相关现象进行计算模拟，并将比较编程技术和结果。

This award will enable Prof. Stuart L. Shapiro and colleagues of Cornell University to collaborate with Prof. Humitaka Sato of Kyoto University, Japan, and co-workers over a period of two years. They will investigate certain leading-edge problems in relativity and relativistic astrophysics, including the nature of gravitational collapse, the formation of black holes, and the generation of gravity waves. The emphasis of this work will be on the application of supercomputers to these problems. The purpose of this research is to enhance our understanding of both relativity and cosmology, by bringing together two of the leading groups in the field. Both groups have done pioneering research in these fields and share an interest in the application of supercomputers to these problems. The program of regular visits and collaborative investigations to be supported by this grant will combine the expertise of the groups. Appropriate supercomputer facilities are available both in Kyoto and at the Cornell National Supercomputer Facility, and will be applied to such problems as the nature of mass singularities leading to black holes; the nature of nonspherical gravitational collapse; and cosmology of the early universe. Each group has developed its own algorithms for computational simulation of relevant phenomena, and programming techniques and results will be compared.