Feedback Processes of Low Metallicity Protogalaxy Analogs

Jacqueline Monkiewicz被授予NSF天文学和天体物理学博士后奖学金，在亚利桑那州立大学和新墨西哥州立大学开展研究和教育项目。她将利用对附近星系的观测，这些星系类似于早期宇宙中的星系，以研究紫外线和X射线如何有效地从这些星系逃逸到星际介质中。这些信息将提供对早期宇宙中第一个星系是如何电离中性氢的洞察。除了这项研究，她还将开发向盲人和视障观众展示天文学的工具。拟议的研究计划旨在促进我们对早期宇宙中再电离时代的理解。早期星系中电离光子的逃逸分数是更好地理解再电离的重要组成部分。这个项目将使用一组特殊的低红移矮星系，它们被认为是高红移莱曼-阿尔法发射体的类似物。该项目将通过光谱学使用电离映射来研究影响逃逸分数的物理过程。对于她工作中的教育部分，Monkiewicz将为盲人和视障人士开发一款音响天空智能手机应用程序和便携式触觉天文馆。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

Jacqueline Monkiewicz is awarded an NSF Astronomy and Astrophysics Postdoctoral Fellowship to conduct a program of research and education at Arizona State University and New Mexico State University. She will use observations of nearby galaxies that are analogs of galaxies in the early universe to study how efficiently ultraviolet and X-ray light can escape into the intergalactic medium from these galaxies. This information will provide insight into how the first galaxies ionized the neutral hydrogen in the early universe. Alongside this research, she will develop tools for presenting astronomy to blind and visually impaired audiences. The proposed research program seeks to advance our understanding of the epoch of reionization in the early universe. The escape fraction of ionizing photons from early galaxies is an important component to better understanding reionization. This project will use a particular low-redshift population of dwarf galaxies that are considered to be analogs of high-redshift Lyman-alpha emitters. The project will use ionization mapping through spectroscopy to study the physical processes that affect the escape fraction. For the educational component of her work, Monkiewicz will develop a sonified sky smartphone app and a portable tactile planetarium for the blind and visually impaired.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.