Collaborative Research: The Young Remnants of Massive Star Supernovae

合作研究：大质量恒星超新星的年轻遗迹

• 批准号: 0307366
• 负责人: Roger Chevalier
• 金额: --
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-06-15 至 2007-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0307366&HistoricalAwards=false
• 关键词: Collaborative; Research; Young; Remnants; Massive

Proposal ID: AST-0307366 / AST-0307256Institution: University of Virginia / North Carolina State UniversityPI: Chevalier, Roger / Blondin, JohnDr. Roger Chevalier at the University of Virginia and Dr. John Blondin at North Carolina State University are awarded funds to model the young remnants of massive star supernovae. During their lifetimes, massive stars undergo mass loss during various evolutionary phases. When they finally end their lives as supernovae, the interaction depends on both the mass loss processes leading up to the explosion and the structure of the exploding star. Multi-wavelength observations of this interaction will be modeled for various types of massive star supernovae. Realistic stellar models will be used in hydrodynamic models of the interaction, including the effects of inhomogeneous structure in the circumstellar material. The physical processes to be investigated include the production of X-ray emission, electron heating in fast shock waves, the production and evolution of relativistic electrons and their emission, possible dust formation in a dense interaction shell, infrared emission from collisionally heated dust, and spectral properties expected for various interaction components. The mass loss properties of various kinds of massive star supernovae will be determined and related to expectations from evolutionary models. This work has broad implications for astrophysics in that it is relevant to the late evolution of massive stars, the return of heavy elements to the interstellar medium, and physical processes at high energy densities. The research will build ties between the University of Virginia, North Carolina State University, and Stockholm Observatory. This work will also result in the training of a graduate student in computer simulation techniques. A module describing the results of three-dimensional simulations will be added to a public web site that already offers the existing code. Finally, the research results will be integrated into undergraduate courses and public lectures.

提案ID: AST-0307366 / AST-0307256Institution: University of Virginia / North Carolina State University / ypi: Chevalier， Roger / Blondin， john博士。弗吉尼亚大学的罗杰·谢瓦利埃和北卡罗来纳州立大学的约翰·布隆丁博士获得了一笔资金，用于模拟大质量恒星超新星的年轻残骸。在它们的一生中，大质量恒星在不同的演化阶段经历质量损失。当它们最终以超新星的形式结束生命时，相互作用取决于导致爆炸的质量损失过程和爆炸恒星的结构。这种相互作用的多波长观测将为各种类型的大质量恒星超新星建模。真实的恒星模型将用于相互作用的流体动力学模型，包括星周材料中不均匀结构的影响。要研究的物理过程包括x射线发射的产生，快速激波中的电子加热，相对论电子的产生和演化及其发射，在密集的相互作用壳中可能形成的尘埃，碰撞加热尘埃的红外发射，以及各种相互作用成分的光谱特性。各种大质量恒星超新星的质量损失特性将被确定，并与进化模型的期望相关。这项工作对天体物理学具有广泛的意义，因为它与大质量恒星的晚期演化、重元素返回星际介质以及高能量密度下的物理过程有关。这项研究将在弗吉尼亚大学、北卡罗莱纳州立大学和斯德哥尔摩天文台之间建立联系。这项工作还将培养一名计算机模拟技术的研究生。一个描述三维模拟结果的模块将被添加到一个已经提供现有代码的公共网站上。最后，将研究成果整合到本科课程和公开讲座中。