Detailed Studies of Instrumental and Astrophysical Limitations to Future Large-Scale Velocity Measurements with the Kinetic Sunyaev-Zel'dovich Effect

该项目的目标是开发一个端到端的模拟和分析管道，用于观察所谓的“动力学Sunyaev-Zel'dovich （kSZ）效应”。这种效应是由于星系团中的气体对宇宙微波光子的散射，可以用来推断星系团沿着视线的“特殊”运动（即它们相对于宇宙膨胀的运动）。更广泛的影响包括研究生的研究训练。提案人将通过在当地高中物理教室做志愿者，协助实验室活动，提供讲座，并使用加州理工学院最先进的设备进行互动演示，直接影响当地社区。这项研究工作将量化kSZ测量可能达到的预期科学目标，并将描述天体物理学和仪器系统学对宇宙学参数、暗能量和大尺度结构估计的影响。

The objective of this project is to develop an end-to-end simulation and analysis pipeline for observations of the so-called "kinetic Sunyaev-Zel'dovich (kSZ) effect." This effect is due to the scattering of cosmic microwave photons by gas in galaxy clusters, and can be used to infer the "peculiar" motions of clusters (i.e., their motion relative to cosmic expansion) along the line of sight. Broader impacts of the work include research training of graduate students. The proposers will directly impact their local community by volunteering in a local high school physics classroom, assisting with lab activities, delivering lectures, and leading interactive demonstrations using state-of-the-art equipment from Caltech. The research work will quantify the expected science reach possible with kSZ measurements, and will characterize the impact of astrophysical and instrumental systematics on estimations of cosmological parameters, dark energy, and large scale structure.