The Role of Heating and Enrichment in the Formation of Large-Scale Structure

议员- 0104415 -埃文ScannapiecoDr。Scannapieco将作为MPS杰出国际博士后研究员在意大利阿塞特里天文台和巴黎天体物理研究所开展一项研究计划。他的理论和观测项目将研究宇宙中的加热和富集过程，以及它们对大尺度结构形成的影响。观测计划将对遥远的流出物进行最精确的光谱检查，并在哈勃深空中寻找遥远星系周围的加热气体。观测研究将辅以三个密切相关的理论项目：1)详细的数值研究星系流出,流出将有助于更好的量化作用在热浓缩的历史从所有星系形成漫射天然气,2)如何浓缩的研究历史可以与金属分布在银河系的恒星,和3)的数值研究外流对宇宙微波背景辐射的影响,其中一个最敏感的探针加热和电离宇宙的历史。本研究由数学和物理科学理事会多学科活动办公室资助

MPS-0104415Evan ScannapiecoDr. Scannapieco will carry out a program of research as an MPS Distinguished International Postdoctoral Research Fellow at the Osseratorio Astrofisico di Arcetri, Italy, and the Institut d'Astrophysique, Paris. His theoretical and observational program will examine heating and enrichment processes in the Universe and their impact on the formation of large-scale structure. The observational program will carry out the most accurate spectroscopic examination of distant outflows yet undertaken, as well as a search for heated gas around distant galaxies in the Hubble Deep Field. The observational research will be complemented by three closely related theoretical projects: 1) a detailed numerical study of galaxy outflows that will help to better quantify the role outflows play in the thermal and enrichment history of the diffuse gas from which all galaxies form, 2) a study of how this enrichment history can be related to the metal distribution in the stars of our own galaxy, and 3) a numerical study of the impact of outflows on the cosmic microwave background radiation, one of the most sensitive probes of the heating and ionization history of the Universe. This research is funded through the Office of Multidisciplinary Activities in the Directorate for Mathematical and Physical Sciences.***