Long Term Evolution of Cataclysmic Variables

灾难性变量的长期演变

• 批准号: 1008734
• 负责人: Paula Szkody
• 金额: $ 25.94万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1008734&HistoricalAwards=false
• 关键词: Long; Term; Evolution; Cataclysmic; Variables

Dr. Szkody and her collaborators will conduct three projects on interacting binary stars. In the first, they will measure changes in the orbital period of the only known eclipsing binary of the AM CVn type; this will yield the rate of orbital energy lost through the emission of gravitational radiation. The second project will measure the temperatures and other properties of pulsating white dwarf stars to determine the location of the onset of instability. Finally, they will investigate certain other systems to measure changes in angular momentum with mass accretion, which may shed light on the formation of Type Ia supernovae.These projects are expected to have an impact in several areas of binary evolution. For example, understanding the gravitational wave radiation from binaries will help distinguish signals of individual objects from cosmological signals in future gravitational wave experiments such as LISA (Laser Gravitational Wave Antenna). This team will also provide research and analysis opportunities for undergraduate students and high school teachers.

Szkody博士和她的合作者将进行三个关于相互作用的双星的项目。 首先，他们将测量唯一已知的AM CVn型食双星的轨道周期变化;这将产生通过引力辐射发射损失的轨道能量率。 第二个项目将测量脉动白色矮星的温度和其他特性，以确定不稳定开始的位置。 最后，他们将研究某些其他系统，以测量角动量随质量吸积的变化，这可能会揭示Ia型超新星的形成。这些项目预计将在双星演化的几个领域产生影响。 例如，了解双星的引力波辐射将有助于在未来的引力波实验中区分单个物体的信号和宇宙信号，如丽莎（激光引力波天线）。 该团队还将为本科生和高中教师提供研究和分析机会。