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

MPS-0104415埃文·斯卡纳皮科博士。Scanapieco将作为MPS杰出国际博士后研究员在意大利的Osseratorio Astrofit ico di Arcetri和巴黎的Institut d‘AstroPhysique执行一项研究计划。他的理论和观测计划将研究宇宙中的加热和浓缩过程，以及它们对大尺度结构形成的影响。该观测计划将对遥远的外流进行迄今最精确的光谱检查，以及在哈勃深场的遥远星系周围寻找加热的气体。观测研究将得到三个密切相关的理论项目的补充：1)星系外流的详细数值研究，这将有助于更好地量化外流在所有星系形成的扩散气体的热和富集史中所起的作用，2)研究这种富集史如何与我们银河系恒星中的金属分布有关，以及3)外流对宇宙微波背景辐射的影响的数值研究，宇宙微波背景辐射是宇宙加热和电离史最灵敏的探测器之一。这项研究是由数学和物理科学局的多学科活动办公室资助的。

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.***