Collaborative research: Three-Dimensional Simulations of Type Ia Supernovae: Constraining Models with Observations

合作研究：Ia 型超新星的三维模拟：观测约束模型

• 批准号: 0708855
• 负责人: Peter Hoeflich
• 金额: $ 48.16万
• 依托单位: Florida State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-08-15 至 2014-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0708855&HistoricalAwards=false
• 关键词: Collaborative; research; Three; Dimensional; Simulations

AST-0709181/AST-0707704/AST-0708873/AST-0708855Kohkhlov/Baron/Wang/HoeflichThis project is a comprehensive theoretical analysis of thermonuclear Type Ia supernovae (SNe Ia), which will account for any three-dimensional (3D) processes affecting SNe Ia explosions, and will provide a rigorous comparison of model predictions with existing and future high quality observations. The methods and techniques will be combined into the remote-access SNe Ia computational pipeline, which comprises sophisticated 3D simulation algorithms for fluid dynamics, nucleosynthesis, and radiation transport, as well as tools for the 3D analysis of SNe Ia data. SNe Ia are crucial for identifying the nature of dark energy, one of the most important problems facing modern science, because they serve as one of the most direct and precise distance indicators in the Universe. The results of this study will improve the cosmological calibration of these critical tools, by trying to understand what affects their status as standard candles, notably the different types of progenitor systems, deviations from spherical symmetry, and interaction with circumstellar matter. One important outcome will be a comprehensive set of observationally verified first-principles multidimensional explosion models of SNe Ia. Identifying physical correlations among predicted and observed signatures of SNe Ia will be crucial for improving the accuracy of their calibration.This work is an exceptional platform for introducing students to cross-disciplinary and multi-field science, through the many areas involved in studying SNe Ia, such as numerical methods, large-scale hydrodynamics and radiation transport simulations, observations, and cosmological applications. Research results will be made available to the broad scientific community via the developed computational pipeline, and will be disseminated to the wider non-technical audience. The results will also benefit current and future ground- and space-based observing programs.

AST-0709181/AST-0707704/AST-0708873/AST-0708855Kohkhlov/Baron/Wang/HoeflichThis project is a comprehensive theoretical analysis of thermonuclear Type Ia supernovae (SNe Ia), which will account for any three-dimensional (3D) processes affecting SNe Ia explosions, and will对模型预测与现有和未来的高质量观​​察结果进行了严格的比较。 该方法和技术将合并到远程ACES SNE IA计算管道中，该管道包括用于流体动力学，核合成和辐射传输的复杂的3D模拟算法，以及用于SNE IA数据的3D分析的工具。 SNE IA对于确定黑暗能源的性质至关重要，黑暗能源是现代科学面临的最重要问题之一，因为它们是宇宙中最直接，最精确的距离指标之一。 这项研究的结果将通过试图了解影响其作为标准蜡烛的状态的原因，尤其是不同类型的祖细胞系统，偏离球形对称性的偏差以及与情节物质的相互作用来改善这些关键工具的宇宙学校准。 一个重要的结果将是一组经过观察验证的第一原理的多维爆炸模型。 Identifying physical correlations among predicted and observed signatures of SNe Ia will be crucial for improving the accuracy of their calibration.This work is an exceptional platform for introducing students to cross-disciplinary and multi-field science, through the many areas involved in studying SNe Ia, such as numerical methods, large-scale hydrodynamics and radiation transport simulations, observations, and cosmological applications. 研究结果将通过开发的计算管道向广泛的科学界提供，并将传播给更广泛的非技术受众。 结果还将受益于当前和未来的基础和空间观测计划。