Research on Gravitation, Relativity and Cosmology (Physics)

引力、相对论和宇宙学研究（物理学）

• 批准号: 8921378
• 负责人: David Wilkinson
• 金额: $ 184.03万
• 依托单位: Princeton University
• 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 1993-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8921378&HistoricalAwards=false
• 关键词: Research; Gravitation; Relativity; Cosmology; Physics

The outstanding Princeton research group will carry out a broad program of theoretical and experimental work on extragalactic astronomy, cosmology and the physics of the early universe. Among the topics to be studied are: 1. Sky maps of the 2.8 K cosmic background radiation. This can better test theories but requires new techniques, considerably larger experimental efforts, and better observing sites. 2. The long wavelength part of the 2.8 K CBR. Measurements at 10 to 50 cm wave lengths require detailed treatment of radiation from the galaxy, but the results would be invaluable for tests of theories of the origin of perturbations to the spectrum. 3. Observational studies of galaxy formation. An experiment designed to measure fluctuations in the sub-mm background may detect young galaxies with high star formation. Proposed X-ray observations of rich clusters at redshifts z ~ 1 are a critical test of the biased cold dark matter theory. 4. Theoretical studies of the evolution of the large-scale structure of the universe. A new numerical technique should be well suited to the study of the primeval mass fluctuations needed to produce observed structures by gravity. The numerical renormalization group method will be used to study evolution from fractal primeval density fluctuations. Semi- phenomenological theories of the origin of the large-scale structure of the universe will also be explored.

杰出的普林斯顿研究小组将进行一项 广泛的理论和实验工作计划， 银河系外天文学、宇宙学和早期银河系物理学 宇宙 将研究的专题包括： 1. 2.8K宇宙背景辐射的天空图。 这可以更好地测试理论，但需要新的技术， 更大的实验努力，更好的观察 网站. 2. 2.8 K CBR的长波部分。 在10至50厘米波长的测量需要详细的 处理来自银河系的辐射，但结果将 对检验宇宙起源的理论是无价的 对光谱的扰动。 3.星系形成的观测研究。 一个 实验旨在测量亚毫米的波动 背景可能探测到具有高星星形成的年轻星系。 红移z ~ 1的富星系团的X射线观测 是对有偏见的冷暗物质理论的一次重要检验 4.大尺度演化的理论研究 宇宙的结构。 一种新的数值技术应该是 非常适合研究原始质量波动 需要通过重力产生观测结构。 的 数值重整化群方法将被用来研究 从分形原始密度波动演化而来。 半 大尺度宇宙起源的唯象理论 宇宙的结构也将被探索。