CAREER: Cosmology with the Cosmology Large Angular Scale Surveyor (CLASS)

这个CAREER项目的主要目标是了解宇宙是如何开始的。宇宙起源的主要理论，被称为暴胀理论，预测了引力波的产生，跨越了可观测的宇宙。这些波会在早期宇宙的光偏振中留下独特的特征。这一特征的发现和表征将为早期宇宙打开一扇新的窗口，并将量子力学与引力联系起来，引力是物理学前沿的一个目标。为了实现这些目标，该项目将利用宇宙大角尺度测量仪（CLASS）实现对独特偏振测量的最具变革性和最广泛的宇宙学分析。通过资助建立和运营CLASS的博士生的宇宙学研究，该项目培养了下一代开创性的科学家。它还为本科阶段的包容性研究和课程搭建了一座桥梁。公开讲座、学校访问和在线媒体进一步吸引更广泛的社区参与早期宇宙的令人兴奋的科学。这个CAREER项目将通过宇宙大角尺度测量仪（CLASS）的独特微波偏振测量来实现最具变革性和最广泛的宇宙学。主要目标是在宇宙微波背景（CMB）的b模极化中探测并准确表征暴胀引力波的印记。另一个目标是在最大角度尺度上对宇宙微波背景的e模偏振进行有限的宇宙方差测量，以确定再电离。CLASS调查是独一无二的：它是唯一一个具有广泛频率覆盖范围的大规模测量，探测了膨胀和再电离留下最强特征的角尺度的全部范围。这项研究将利用40至220 GHz范围内70%的天空中的再电离和重组信号来表征原始b模式，消除系统误差，并测试对暴胀信号的角谱形状和各向同性的预测。由于公共调查数据将与从无线电到x射线的其他大规模调查数据重叠，因此调查的科学遗产将大大扩展其知识价值。一个重要的影响将是培养下一代科学家。该项目支持建造和操作望远镜的研究生进行宇宙学顶点研究。它还为本科阶段的包容性研究和课程搭建了一座桥梁。公开讲座、学校访问和在线媒体进一步吸引更广泛的社区参与早期宇宙的令人兴奋的科学。

The primary goal of this CAREER project is to understand how the universe began. The leading theory of the beginning, called Inflation theory, predicts the creation of gravitational waves spanning the observable universe. These waves would have left a unique signature in the polarization of light from the early universe. Discovery and characterization of this signature would open a new window to the early universe and also connect quantum mechanics with gravity, an objective at the frontier of physics. To accomplish these goals, this project will realize the most transformative and broadest reaching cosmological analysis of a unique polarization measurement with the Cosmology Large Angular Scale Surveyor (CLASS). By sponsoring the cosmological research of the PhD students who built and operated CLASS, the project trains the next generation of trailblazing scientists. It also builds a bridge for inclusive research and coursework at the undergraduate level. Public talks, school visits, and online media further engage the broader community in the exciting science of the early universe. This CAREER project will achieve the most transformative and broadest reaching cosmology from a unique microwave polarization measurement with the Cosmology Large Angular Scale Surveyor (CLASS). The primary goal is to detect and accurately characterize the imprint of Inflationary gravitational waves in the B-mode polarization of the Cosmic Microwave Background (CMB). Another goal is to make a cosmic-variance limited measurement of the CMB E-mode polarization on the largest angular scales to pin down reionization. The CLASS survey is unique: It is the only large scale measurement with broad frequency coverage that probes the full range of angular scales on which inflation and reionization leave their strongest signatures. This study will characterize the primordial B-modes using both reionization and recombination signals across 70% of the sky from 40 to 220 GHz, eliminating systematic errors and testing predictions for the angular spectrum shape and isotropy of the inflationary signal. Because the public survey data will overlap other large-scale surveys from the radio to the X-ray, the scientific legacy of the survey will greatly extend its intellectual merits. An important impact will be the fostering of the next generation of scientists. The project supports cosmological capstone research for graduate students who have built and operated the telescopes. It also builds a bridge for inclusive research and coursework at the undergraduate level. Public talks, school visits, and online media further engage the broader community in the exciting science of the early universe.