Theory and Observations of Supernovae

超新星的理论和观测

• 批准号: 0098644
• 负责人: John Wheeler
• 金额: $ 28.25万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-06-01 至 2004-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0098644&HistoricalAwards=false
• 关键词: Theory; Observations; Supernovae

Wheeler, J. Craig" Theory and Observation of Supernovae "AST- 0098644There is a renewed interest in cosmology with the evidence that supernovae, when used as distance indicators, may point to a finite cosmological constant and an accelerating expansion of the universe. In addition, there has been a recent link between a supernova and a gamma-ray burst. Understanding the different types of supernovae has thus become more important than ever before. In this award, three major themes concerning the observation and theory of supernovae will be pursued. The first is to understand better Type Ia supernovae and their application to measure cosmological distances. This will involve observations with the Hobby-Eberly telescope and infrared spectra obtained at other observatories. The second theme is to explore the polarization of supernovae and its implications about the asymmetry of supernova outbursts. The third major undertaking will be to construct theoretical models of the magnetohydrodynamic processes involved in core collapse that may produce jets and asymmetries of the sort observed.

克雷格·惠勒的《超新星理论和观测》AST-0098644人们对宇宙学重新产生了兴趣，有证据表明，当超新星用作距离指示器时，可能指向有限的宇宙常数和宇宙的加速膨胀。此外，最近还发现了超新星和伽马射线爆发之间的联系。因此，理解不同类型的超新星变得比以往任何时候都更加重要。在这个奖项中，将涉及超新星的观测和理论的三个主要主题。第一个是更好地了解Ia型超新星及其在测量宇宙距离方面的应用。这将包括使用Hobby-Eberly望远镜的观测和在其他天文台获得的红外光谱。第二个主题是探索超新星的极化及其对超新星爆发不对称性的影响。第三项主要任务将是建立磁流体力学过程的理论模型，这些过程涉及可能产生所观察到的喷流和不对称性的核心塌陷。