CAREER: Measuring the CMB Polarization Spectrum

职业：测量 CMB 偏振光谱

• 批准号: 9984440
• 负责人: Suzanne Staggs
• 金额: $ 49.9万
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-07-15 至 2005-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9984440&HistoricalAwards=false
• 关键词: CAREER; Measuring; CMB; Polarization; Spectrum

Staggs will build a new instrument to measure the as yet undetected polarization ofthe cosmic microwave background (CMB). In the standard paradigm of cosmology, theorypredicts that the CMB will be polarized at the level of a few parts in 106, with an angular spectrum parameterized by ten cosmological parameters, including the cosmological constant, the baryon density, Hubble's constant, and the density of the cold dark matter. Staggs' experiment will not only detect the polarization, but begin tracing out its angular spectrum. The CMB polarization is one of the exciting frontiers of modern cosmology that Staggs will introduce to students in a new class called Cosmology As It Happens. Other topics will include whatever breaking stories about cosmology are in the public eye at the time. Cosmology As It Happens is meant for nonspecialists, and will implement the learn by teaching method of instruction. Students will be placed into small, heterogeneous groups and asked to design web sites for grade-school kids. Local Trenton area fifth graders will be invited into the university to test and critique the websites.

Staggs将建造一台新仪器来测量尚未探测到的宇宙微波背景（CMB）极化。在宇宙学的标准范式中，理论预测宇宙微波背景将在106的几个部分的水平上被极化，角谱由十个宇宙学参数化，包括宇宙学常数，重子密度，哈勃常数和冷暗物质的密度。 斯塔格斯的实验不仅会探测到偏振，而且开始追踪它的角谱。 CMB偏振是现代宇宙学令人兴奋的前沿之一，Staggs将在一个名为“宇宙学”的新课程中向学生介绍。其他主题将包括任何关于宇宙学的突破性故事在当时的公众视野。 宇宙学，因为它发生的是为非专业人士，并将实施教学方法的教学学习。学生们将被分成不同的小组，并被要求为小学生设计网站。当地特伦顿地区的五年级学生将被邀请到大学测试和批评的网站。