Theoretical Astrophysics

理论天体物理学

• 批准号: 8917765
• 负责人: Roger Blandford
• 金额: $ 35.2万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-03-15 至 1993-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8917765&HistoricalAwards=false
• 关键词: Theoretical; Astrophysics

Dr. Blandford is one of the nations leading theoretical astro- physicists, and has been granted support in a project for theo- retical investigations of three areas: cosmology, neutron stars, and stellar outflows. The cosmological study will utilize the multiple images of distant quasars and galaxies formed by the gravitational lens effects of intervening galaxies and clusters of galaxies as probes of the size and matter content of the universe. The neutron star investigations will explore the possibility that gamma-ray bursters are caused by an instability or nuclear explosion deep below the surface of a neutron star. Protostars, cataclysmic variables and X-ray binaries occasionally exhibit evidence for collimated outflow which may be driven hydromagnetically. This possibility will be examined in detail, with particular emphasis on determining the observational signa- tures peculiar to these different environments.

布兰福德博士是国家领先的理论天文学家之一， 物理学家，并已获得支持，在一个项目的理论， 三个领域的理论研究：宇宙学，中子星， 和恒星外流 宇宙学研究将利用 遥远的类星体和星系的多幅图像， 介入星系和星系团的引力透镜效应 星系的大小和物质含量的探测器 宇宙 中子星星研究将探索 伽马射线爆发是由不稳定性引起的可能性 或中子星星表面深处的核爆炸。 原恒星，激变变星和X射线双星偶尔 显示出可能被驱动的准直流出的证据 水磁的 将详细审查这种可能性， 特别强调确定观测信号- 这些不同的环境所特有的特征。