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Understanding the Physics of Neutron Star Interiors

了解中子星内部的物理原理

基本信息

批准号：
RGPIN-2016-04602
负责人：
Heinke, Craig
金额：
$ 5.39万
依托单位：
University of Alberta
依托单位国家：
加拿大
项目类别：
Discovery Grants Program - Individual
财政年份：
2020
资助国家：
加拿大
起止时间：
2020-01-01 至 2021-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=709398
关键词：
Understanding Physics Neutron Star Interiors

项目摘要

My program will improve our understanding of the interiors of neutron stars (NSs, important for nuclear physics), and of the evolution of binary star systems containing NSs. Measuring the radius of NSs is difficult, but crucial for constraining their composition, and the method of studying quiescent NSs in globular clusters is likely the most promising. I am leading projects to constrain systematic errors in this method, and obtain observations with the precision needed to give useful constraints on nuclear physics. I am unraveling differences in neutrino emission among NSs, which promise to illuminate the transition to neutron superfluidity in NS cores, and the density threshold for rapid Urca-process neutrino emission. I am exploring the evolution of binary systems containing NSs and black holes, through developing new observational campaigns to identify low-luminosity transient X-ray sources, and studying populations of quiescent NSs and black holes in globular clusters. These projects offer opportunities for me to train graduate and undergraduate students in X-ray and optical analysis techniques, scientific problem-solving and question-asking, and communication. Early exposure to astrophysics research will especially benefit those hoping to continue in this area. Skills in learning new software and scripting languages, scientific problem-solving, and communication will also benefit students who go into industry or other areas of physics.

我的计划将提高我们对中子星（NS，对核物理很重要）内部以及包含 NS 的双星系统演化的理解。测量NS的半径很困难，但对于限制其组成至关重要，而研究球状星团中静止NS的方法可能是最有前途的。我正在领导一些项目来限制这种方法中的系统误差，并获得所需精度的观测结果，从而对核物理进行有用的限制。我正在阐明 NS 之间中微子发射的差异，这有望阐明 NS 核心向中子超流性的转变，以及快速乌尔卡过程中微子发射的密度阈值。我正在探索包含 NS 和黑洞的双星系统的演化，通过开发新的观测活动来识别低光度瞬态 X 射线源，并研究球状星团中静态 NS 和黑洞的种群。这些项目为我提供了在 X 射线和光学分析技术、科学问题解决和提问以及沟通方面培训研究生和本科生的机会。尽早接触天体物理学研究将对那些希望继续从事该领域的人特别有益。学习新软件和脚本语言、科学解决问题和沟通的技能也将使进入工业或其他物理领域的学生受益。