Theoretical Studies of Magnetic Degenerate Stars

磁简并星的理论研究

• 批准号: 8700742
• 负责人: Ganesar Chanmugam
• 金额: $ 6.43万
• 依托单位: Louisiana State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-07-01 至 1989-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8700742&HistoricalAwards=false
• 关键词: Theoretical; Studies; Magnetic; Degenerate; Stars

The research will concentrate on magnetic cataclysmic variables, which are binary star systems in which a magnetic white dwarf accretes matter from a companion star. Topics include the cyclotron emission from hot magnetized plasmas, radio emission from them, and the process of accretion onto magnetic stellar polar caps. Among the many violent cosmic phenomena, some occur because two stars orbit about each other and gases begin to flow from one star to the other until an explosion occurs on the receiving star. This award supports theory and modelling of mass transfer onto a highly magnetic white dwarf, an Earth-sized star. Observations of such objects have improved to the point where one may expect new physical understanding of exceedingly hot and highly magnetized plasmas, because these astronomical plasmas occur on a scale vastly larger than the Earth's laboratories or even its magnetic surroundings.

这项研究将集中在磁性激变变星上，这是一种双星系统，在双星系统中，磁性白矮星从伴星中吸积物质。主题包括热磁化等离子体的回旋辐射，它们的无线电辐射，以及吸积到磁性恒星极帽的过程。在许多剧烈的宇宙现象中，有一些是因为两颗恒星相互环绕，气体开始从一颗恒星流向另一颗恒星，直到接收到的恒星发生爆炸。该奖项支持高磁性白矮星的质量转移理论和模型，这是一颗地球大小的恒星。对这类天体的观测已经改进到了这样一个程度，人们可以期待对极热和高度磁化的等离子体有新的物理理解，因为这些天文等离子体发生的规模远远大于地球的实验室，甚至比地球周围的磁性环境大得多。