Large-Scale Structure: Decoupling, Dark Ages, Today

大规模结构：脱钩、黑暗时代、今天

• 批准号: 9970519
• 负责人: Marc Kamionkowski
• 金额: $ 10万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-08-01 至 1999-10-15
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9970519&HistoricalAwards=false
• 关键词: Large; Scale; Structure; Decoupling; Dark

AST-9970519Large Scale Structure: Decoupling dark ages, todayMarc KamionkowskiDr. Kamionkowski is conducting a theoretical study to maximize the science return for new observations of the large scale structure of the universe. The research will focuses on two issues: (1) how can one probe the evolution of large scale structure during the time between the decoupling time (near a redshift about 1100) and the structure delineated by current surveys; and (2) how can one reconstruct the distribution of mass in the Universe today from the observed distribution of luminous matter. Dr. Kamionkowski is exploring reionization from an early generation of gravitationally collapsed objects that might produce several signatures in the cosmic microwave background; for example, damping of the acoustic peaks in the power spectrum, secondary anisotropies at smaller angular scales, additional large angle polarization, and distortions to the cosmic microwave background energy spectrum. ***

AST-9970519大规模结构：解耦黑暗时代，今天马克Kamionkowski博士。Kamionkowski正在进行一项理论研究，以最大限度地提高对宇宙大尺度结构的新观测的科学回报。 研究将集中在两个问题上：（1）如何探测在去耦时间（红移约1100）和当前测量描绘的结构之间的大尺度结构的演化;以及（2）如何从观测到的发光物质分布重建今天宇宙中的质量分布。 Kamionkowski博士正在探索早期引力坍缩物体的再电离，这些物体可能会在宇宙微波背景中产生几个特征;例如，功率谱中声学峰的阻尼，较小角尺度下的二次各向异性，额外的大角度极化以及宇宙微波背景能谱的扭曲。***