The Structure of the Universe Beyond 100 Mpc

100 Mpc 以上的宇宙结构

• 批准号: 0407308
• 负责人: Alexander Szalay
• 金额: $ 31.84万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-08-01 至 2007-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0407308&HistoricalAwards=false
• 关键词: Structure; Universe; Beyond; 100; Mpc

AST-0407308SzalayThis research will address several major questions related to the large-scale distribution of galaxies, in particular by measuring the fluctuation spectrum of the galaxy distribution on very large scales, which overlap with measurements of the Cosmic Microwave Background fluctuations. A promising technique introduced a few years ago has been turned into a practical tool, which provides optimal weighting of the data for each individual mode of the power spectrum, and has so far successfully provided very tight constraints on cosmological parameters. The current project may even detect the existence of baryon bumps, which enable measurement of the angular diameter distance relation, and constrain the equation of state of the dark energy. This study will enhance the effectiveness of the SkyServer, a web site constantly in use by high schools and the general public, and will further promote collaboration with the Hands-On Universe project, where students can do follow-up observations, or look up properties of something interesting seen in an observation.

AST-0407308Szalaythis研究将解决与星系的大规模分布相关的几个主要问题，特别是通过测量非常大尺度的星系分布的波动谱，这与宇宙微波背景波动的测量重叠。 几年前引入的一种有前途的技术已变成一种实用工具，该工具为每个单个模式的功率谱模式提供了最佳的加权，并成功地对宇宙学参数提供了非常严格的约束。 当前的项目甚至可以检测到Baryon凸起的存在，从而可以测量角直径距离关系，并限制暗能量状态的方程。 这项研究将提高Skyserver的有效性，Skyserver是一个不断高中和公众使用的网站，并将进一步促进与动手宇宙项目的合作，学生可以在其中进行后续观察，或查找观察中有趣的事物的属性。