The Bulls-Eye Effect as a Probe of the Mass Density of the Universe

牛眼效应作为宇宙质量密度的探测器

• 批准号: 0070702
• 负责人: Adrian Melott
• 金额: $ 30万
• 依托单位: University of Kansas Center for Research Inc
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-05-01 至 2004-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0070702&HistoricalAwards=false
• 关键词: Bulls; Eye; Effect; Probe; Mass

AST-0070702MelottThis project has as its goal the development of a novel technique for measuring the mass density of the universe. Knowledge of the mass density (called Omega_m) is critical for understanding the "fate" of the universe (whether open or closed) in most contemporary cosmological models. Several methods are currently in use for measuring this very important cosmological parameter but all give slightly different results. The technique to be used in this research is completely independent of the other techniques in use. It will be based on a series of computer simulations, each using a different mass density, of the observed spatial distribution of galaxies. The results of these simulations will then be compared with the true galaxy distributions as measured in new, large-scale surveys such as the Sloan Digital Sky Survey and the Las Campanas Redshift Survey. This new technique should provide a good, independent check on our current knowledge of the universe and its evolution.Funding for this project was provided by the NSF program for ExtragalacticAstronomy & Cosmology (AST/EXC).***

AST-0070702 Melott该项目的目标是开发一种测量宇宙质量密度的新技术。在大多数当代宇宙学模型中，质量密度（称为Omega_m）的知识对于理解宇宙（无论是开放的还是封闭的）的“命运”至关重要。目前有几种方法用于测量这个非常重要的宇宙学参数，但所有方法都给出了略有不同的结果。本研究中使用的技术完全独立于其他技术。它将以一系列计算机模拟为基础，每一个都使用不同的质量密度，对观测到的星系空间分布进行模拟。这些模拟的结果将与新的大规模调查（如斯隆数字巡天和拉斯坎帕纳斯红移巡天）中测量的真实星系分布进行比较。这项新技术应该为我们目前对宇宙及其演化的认识提供一个良好的独立检查。该项目的资金由美国国家科学基金会的银河系外天文学宇宙学计划（AST/EXC）提供。