Gravitational Physics from the Cosmic Microwave Background

宇宙微波背景下的引力物理

• 批准号: 0855887
• 负责人: Lyman Page
• 金额: $ 242.87万
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-05-15 至 2012-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0855887&HistoricalAwards=false
• 关键词: Gravitational; Physics; Cosmic; Microwave; Background

This award supports the Princeton Gravity Group's continued exploration of gravitational physics and cosmology through the experimental and observational study of the cosmic microwave background (CMB) radiation. The specific experimental work includes: (1) Observations and data analysis for the Atacama Cosmology Telscope (ACT). ACT is fully functional and taking data. (2) The fielding and analysis of the Atacama B-mode Survey (ABS) experiment to measure the signature of gravitational waves from the early universe through their imprint on the polarization of the CMB. (3) The completion of the QUIET project, also targeting the CMB polarization, but at lower frequencies, which is just entering its observation and analysis phase. These experiments are complementary to both the existing WMAP satellite and the upcoming PLANCK satellite as well as to other ongoing work. Measurements of the CMB are at the foundation of the standard cosmological model and probe gravitational physics at extreme length and temperature scales. The CMB is the cleanest probe of the physics of the nascent universe. In addition to unveiling fundamental physics during the first instants of the universe, the CMB provides information about the dark energy causing the present-day acceleration of the universe, is sensitive to the sum of the neutrino masses, can help locate the baryons that we know must exist but wich have not yet been found, and tells us how cosmic structure emerged in the early universe. This research program includes substantial educational development for students, continued public outreach, extensive international collaboration, and strong interagency collaboration (especially with NIST). The Princeton group will continue its vigorous program of hands-on research for undergraduates and graduate students.

该奖项通过对宇宙微波背景（CMB）辐射的实验和观察性研究来支持普林斯顿重力小组继续探索引力物理和宇宙学。 特定的实验工作包括：（1）Atacama Cosmology Telscope（ACT）的观察和数据分析。 ACT具有完全功能性并获取数据。 （2）＆＃64257;对Atacama B模式调查（ABS）实验的Elding和分析，以通过对CMB的极化来测量早期宇宙引力波的特征。 （3）安静项目的完成，也针对CMB极化，但在较低的频率下，这只是进入其观察阶段和分析阶段。这些实验与现有的WMAP卫星和即将推出的Planck卫星以及其他正在进行的工作相吻合。 CMB的测量是标准宇宙学模型的基础，并且在极端长度和温度尺度上是探针重力物理学的基础。 CMB是对新生宇宙物理学的最清洁探测。 除了在宇宙的第一瞬间揭开基本物理学外，CMB还提供了有关导致宇宙当今加速的黑暗能量的信息，对中微子群众的总和很敏感，可以帮助您确定必须存在的Baryons，但尚未发现，但尚未发现并告诉US宇宙结构如何在早期的Universe中找到宇宙的宇宙。该研究计划包括针对学生的实质性教育发展，持续的公共宣传，广泛的国际合作以及强大的机构间合作（尤其是与NIST）。普林斯顿集团将继续其针对本科生和研究生的动手研究计划。